Aging Hardening of Cu-Nb-Ni-Cr-Mo Steels

WANG Xuemin; ZHOU Guifeng; YANG Shanwu; HE Xinlai

doi:10.13374/j.issn1001-053x.2000.01.044

Volume 22 Issue 1

Aug. 2021

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WANG Xuemin, ZHOU Guifeng, YANG Shanwu, HE Xinlai. Aging Hardening of Cu-Nb-Ni-Cr-Mo Steels[J]. Chinese Journal of Engineering, 2000, 22(1): 70-74. doi: 10.13374/j.issn1001-053x.2000.01.044

Citation:

WANG Xuemin, ZHOU Guifeng, YANG Shanwu, HE Xinlai. Aging Hardening of Cu-Nb-Ni-Cr-Mo Steels[J]. Chinese Journal of Engineering, 2000, 22(1): 70-74. doi: 10.13374/j.issn1001-053x.2000.01.044

WANG Xuemin, ZHOU Guifeng, YANG Shanwu, HE Xinlai. Aging Hardening of Cu-Nb-Ni-Cr-Mo Steels[J]. Chinese Journal of Engineering, 2000, 22(1): 70-74. doi: 10.13374/j.issn1001-053x.2000.01.044

Citation:

WANG Xuemin, ZHOU Guifeng, YANG Shanwu, HE Xinlai. Aging Hardening of Cu-Nb-Ni-Cr-Mo Steels[J]. Chinese Journal of Engineering, 2000, 22(1): 70-74. doi: 10.13374/j.issn1001-053x.2000.01.044

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Aging Hardening of Cu-Nb-Ni-Cr-Mo Steels

doi: 10.13374/j.issn1001-053x.2000.01.044

1. Material Science and Engineering School, UST Beijing, Beijing 100083, China;
2. National Enterprise's Technical Center, Wuhan Iron & Steel Corporation, Wuhan 430080, China

Received Date: 1996-06-24

Abstract

Abstract

The hardness versus time curves during aging at 450-650℃ of Cu-Nb steels with various copper content have been measured. The precipitation of ε-Cu, Nb carbonitfide and Cr carbide found during aging contributes to the hardening. The result indicates that the Cr carbide hardness peak emerges after long time aging. The more is the copper content the earlier the hardness peak of ε-Cu occurs. In high copper steel the hardness peaks of ε-Cu and Nb carbonitride separates and in low copper steel they overlaps.
- Cu-Nb steel,
- aging process,
- ε-Cu precipitation