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  • 1
    Electronic Resource
    Electronic Resource
    Behavior of Microbiological Influenced Corrosion of the Ship Plate Steel in MarineEnvironment (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 348-349 (Sept. 2007), p. 25-28 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The microbiological influenced corrosion (MIC) behaviors of the ship plate steel directlyexposed in different medias (the sterile seawater, the ferrous bacteria solution and thesulfate-reducing bacteria solution) were investigated with electrochemical impedance spectroscopy(EIS), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and scanning electronmicroscopy (SEM). Corrosion potential, electrochemical impedance and micrographs of specimensunder different experimental conditions were obtained. Results show that the FB and SRB in themarine environment affect the corrosion behavior of the ship plate steel greatly. The corrosionprocess in FB and SRB environment was controlled by both bacteria and corrosion products. Themechanism of MIC is discussed
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.25.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Computational Program for Non-Equilibrium Grain Boundary Segregation Kinetics (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 385-387 (July 2008), p. 65-68 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The solute segregation to grain boundaries may be classified into equilibrium andnon-equilibrium segregation. The models and kinetics calculation equations were proved in previouswork. However, the computational task for grain-boundary segregation kinetics process is complexand cumbersome as it can involve a vast amount of numerical data. It is therefore necessary todevelop an easily usable computational program which can provide the researchers with a powerfultool in grain-boundary segregation kinetics process analysis in addition to having a sound theory. Acomputational program of non-equilibrium grain-boundary segregation (NGS) kinetics of solute istherefore developed in this paper. It includes programs for critical time calculation, effective timecalculation and diffusion coefficients calculation, the program of Auger Electron Spectroscopy testdata disposal, the program of curve fitting and the program of NGS kinetics simulation. A simulationexample by using the computation program of NGS kinetic equations is in good accordance with theexperimental observation of phosphorus in steel 12Cr1MoV. The computational program of NGS istherefore proved to be appropriate and helpful
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.385-387.65.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Improvement of MIC Behavior of Low Alloy Steel with Zn-Rich Epoxy Coating (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 348-349 (Sept. 2007), p. 509-512 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The microbiological influenced corrosion (MIC) behavior of the low alloy steel with orwithout Zn-rich epoxy coating in the sterilized medium and sulfate-reducing bacteria (SRB)solution was investigated with electrochemical impedance spectroscopy (EIS), scanning electronmicroscope (SEM) and X-rays diffraction (XRD). Results show that the bacteria in the marineenvironment affect the corrosion behavior of the ship plate steel and the corrosion resistance ofspecimen coated with Zn-rich epoxy was improved greatly. The coating protected the test steeleffectively in the microbial environment with the cathodic protection in the earlier period andphysical barrier protection in the later period
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.509.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Experimental Studies of Non-Equilibrium Grain-Boundary Segregations of Phosphorus under Low Tensile Stresses (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 396-399 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In the present paper, the non-equilibrium grain-boundary segregation of P atom wasstudied in low alloy steels subjected to a low tensile stress at different temperatures. The AES(Auger electron spectroscopy) experiments and dynamic analyses were conducted to study on thenon-equilibrium grain-boundary segregation of P atom. The research results show thatnon-equilibrium segregation of phosphorus occurred at the grain boundaries of the steels2.25Cr1Mo and 12Cr1MoV, while the critical time reached about 0-1 hour at constant temperatures773 and 813K. The relationship between the diffusion rate and the diffusion time for the complexand the phosphorus atom was investigated based on the experimental results. Eventually thediffusion coefficients of complex and P were calculated with using a proposed dynamic model
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.396.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Fracture Behavior and Microstructure of Ti 〈sub〉3〈/sub〉AlC〈sub〉2〈/sub〉 Ceramics Prepared by SHS/PHIP Method (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 385-387 (July 2008), p. 177-180 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Fracture behavior and the microstructure of Ti3AlC2 ceramics prepared by SHS/PHIPmethod were studied. Stress-strain curves at different temperature with a strain rate of 1×10-3 s-1were obtained. Fracture toughness, flexural strength, crack propagation behavior and compressivedeformation of specimens were investigated. Results show that the microstructure of the large sizeTi3AlC2 ceramics prepared by SHS/PHIP method has typical layered feature of ternary carbidecompound. The bridge-link phenomena induced by the flaky grains occurred in three-point bendingtest. It restrained the crack propagation and improved the fracture toughness of the material.Cylindrical specimens under axial compression usually smashed into chips for most of the ceramicsmaterials, however, for the Ti3AlC2 ceramics prepared by SHS/PHIP, shear fracture along 45ºincline of the specimen occurred at room temperature, and bulging deformation without any crackexhibited when temperature was high. It is concluded that the Ti3AlC2 ceramics prepared bySHS/PHIP has better fracture-resistance properties
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.385-387.177.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of Yield Strength and Crack Depth on COD-Decrease-Parameter m (2000)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 183-187 (Apr. 2000), p. 589-594 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/45/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.183-187.589.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    On the Effect of Plastic Constraint on Ductile Tearing (2003)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 251-252 (Oct. 2003), p. 197-202 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/47/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.251-252.197.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of Isothermal Holding Temperature on NGS Kinetics of Phosphorus and Temper Embrittlement (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 348-349 (Sept. 2007), p. 549-552 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: When failure occurs in material, it is often occurs by fracture along some grain boundariesand often by the micro-segregation of embrittling impurity to the grain boundaries. In the presentwork, the non-equilibrium grain-boundary segregation (NGS) kinetics of phosphorus and the temperembrittlement at the same solution treatment and different isothermal holding temperature in steel2.25Cr1Mo are studied. The NGS kinetics curves of phosphorus at the same solution temperature（1050 oC ）and different isothermal holding temperature (540 oC and 600 oC) are given. Experimentalresults provide a direct evidence of NGS kinetic model and show that the grain boundary segregationconcentrations of phosphorus for specimen isothermal holding at 540 oC are higher than those at 600oC. The peak values of AES patterns of solute atoms for specimen isothermal holding at 540 oC arealso higher than those at 600 oC. It is therefore concluded that the lower the isothermal holdingtemperature, the higher the segregation concentration of phosphorus at the grain-boundaries, and alsothe higher the degree of embrittlement
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.549.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Temper Embrittlement and Fracture Control Method Based on NGS Theory and Grain Refinement Technique (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 348-349 (Sept. 2007), p. 545-548 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Temper embrittlement and fracture control method based on both non-equilibriumgrain-boundary segregation (NGS) theory and grain refinement technique are studied in this paper.Grain refinement technique by deformation induced phase transformation in low-alloy steels,12Gr1MoV and 2.25Gr1MoNb, is investigated. A single-pass hot rolling process by using aGleeble-1500 system is performed. Experimental results show that steel strength and toughness maybe controlled and improved by grain refinement, and that the grain sizes were affected by thedeforming temperature, strain reduction, and strain rate. According to the NGS theory, a controlmethod of brittle fracture along grain-boundary is proposed so that some catastrophically brittlefracture failure may be averted. Grain refinement may decrease both the concentration ofphosphorus at grain boundaries and the critical time. With the grain refinement technique, thetemper embrittlement of steel may be improved, and the critical time may be shortened. The cost ofheat treatment for fracture control will therefore be reduced
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.545.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Slow Strain Rate Tensile Testing for Evaluating Stress Corrosion Cracking of Type-40Cr Steel in the Acidic Chloride Solution (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 348-349 (Sept. 2007), p. 877-880 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper investigates application of slow strain rate tensile (SSRT) testing as alaboratory method to characterize stress corrosion cracking (SCC) susceptibility of type 40Cr steelin the acidic chloride solution. SSRT testing was carried out at room temperature in acidic chloridesolution and seawater at different strain rates (3.82×10-7 to 1.41×10-6 s-1)，respectively. The resultsshow that the type 40Cr steel is susceptible to stress corrosion cracking in a certain strain rates(around 1.41×10-6 s-1) in the acidic chloride solution. In tests performed at this strain rate (1.41×10-6s-1), while the specimens are not susceptible to SCC in seawater. Typical intergranular attack is seenon the fracture surface of the former that had failed due to SCC, and the latter had underwentconsiderable necking before fracture, also represented by high reduction of area (RoA) andfractographic feature of dimples consistent with ductile failure. Additionally, the results areconsistent with the data of electrochemical noise (EN) that is generated of type 40Cr steel exposedto the acidic chloride solution and seawater. This study also supports SSRT and EN technique as aneffective testing technique for SCC studies
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.877.pdf
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