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| INFLUENCE OF Cr ON "SOFTENING EFFECT" OF 30CrNiSMoV STEEL |
| Lu Zaojun; Wu Baorong; Wu Peizhi; Li Guiyen; Wang Qi; Lu Hongxiu; Li Xueyuan; Jin Qingqian; Wang Degen (Central Iron and Steel Research Institute; Ministry of Metallurgical Industry; Beijing) |
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Cite this article:
Lu Zaojun; Wu Baorong; Wu Peizhi; Li Guiyen; Wang Qi; Lu Hongxiu; Li Xueyuan; Jin Qingqian; Wang Degen (Central Iron and Steel Research Institute; Ministry of Metallurgical Industry; Beijing). INFLUENCE OF Cr ON "SOFTENING EFFECT" OF 30CrNiSMoV STEEL. Acta Metall Sin, 1982, 18(1): 85-134.
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Abstract The influence of Cr contents on the softening effect of steel 30CrNi5MoV was investigated by using optical microscopy, TEM and phase analysis. The conditional proportion limit, σ_p_(50), of the steel falls sharply as the increasing of Cr contents in the range 0.22—1.61％ under same other experimental conditions. It was deduced that its falling rate is expressed as: σ_p_(50)=1352—245×Cr％. The softening effect may be substantially resulted from that Cr changes the solubility of solute in α-ferrite, coarsens the martensitic substructure and reduces the ratio of the grain size of carbides to their interparticle spacings.
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Received: 18 January 1982
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