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:
Applying the severe deformation, the mechanical properties related to secondaryhardening were investigated. The Mo-Cr-Co-Ni steels containing (5-13)wt% Co and (8-14)wt% Niwere severely rolled at 850 ºC, followed by direct quenching(DQ). DQ specimens were thenisothermally aged at 475℃. Ni additions promoted aging kinetics, accompanied by a littleenhancement in hardness. In contrast, Co additions enhanced the peak hardness, but did not inducea remarkable aging acceleration. In the 13Co addition group, an actual secondary hardening, that is,the peak hardness is higher than the as-quenched hardness. Variation in peak hardness(Rc) in alloysis summarized as follows; 14Ni-13Co(57.2) ≒ 11Ni-13Co(57.1) 〉 8Ni-13Co(56.5) 〉 11Ni-9Co(56.2) 〉 8Ni-9Co(54.4) 〉 11Ni-5Co(53.4)
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.4417.pdf
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