ISSN:
1662-9752
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:
Ingots of ferritic stainless steels, Fe-24Cr and Fe-24Cr-2Mo in mass%, were worked tovarious dimensions for test specimens. Nitrogen was absorbed by the specimens in a furnace filledwith nitrogen gas with a pressure of 101.3 kPa at 1473 K to develop a simple and convenientmanufacturing process of nickel-free austenitic stainless steels. Ferritic Fe-24Cr and Fe-24Cr-2Mowere austenitized with nitrogen absorption to a 2-mm depth from the surface. The hardness, tensilestrength, 0.2% proof stress, and elongation to fracture increased, and the reduction of area decreasedin the alloys by austenitization due to nitrogen absorption. The tensile strength and 0.2% proof stressof these alloys with nitrogen absorption for 129.6 ks were much larger than those of 316L steel, whilethe elongation to fracture was much smaller than that of 316L steel. Therefore, small devices and partswith a maximum thickness or diameter of 4 mm were manufactured with this process in this study
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/08/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.449-452.1085.pdf
