40CrMnSiMoVA钢等温淬火复合组织与韧性

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40CrMnSiMoVA钢等温淬火复合组织与韧性

郭喜平, 胡光立

西北工业大学

收稿日期:1989-11-24 修回日期:1990-04-09 出版日期:1991-01-25 发布日期:1991-01-25

MIXED STRUCTURE AND ITS TOUGHNESS OF ISOTHERMALLY QUENCHED 40CrMnSiMoVA STEEL

Guo Xiping, Hu Guangli

Northwestern Polytechnical University

Received:1989-11-24 Revised:1990-04-09 Online:1991-01-25 Published:1991-01-25

摘要/Abstract

摘要： <正> 合理利用复合组织是实现超高强度钢强韧化的主要途径之一。文献[2]报道了复合组织的冲击韧性α_k随下贝氏体量的增多而升高,但其断裂韧性K_(IC)却比任何一种单一组织都低。超高强度钢的α_k值和K_(IC)值随下贝氏体量增多呈现不同变化的原因,尚未见报道。本文拟通过对40CrMnSiMoVA钢的等温淬火处理,来研究其复合组织与强韧性间的关系。

关键词: 40CrMnSiMoVA钢, 等温淬火, 复合组织

Abstract: The study on the microstructure and mechanical properties of 40CrMnSi-MoVA steel isothermally quenched in the temperature region from 190℃ to 320℃ is dealt with.It is found from experiments that the impact-toughness an of this steel is increased monotonically with the increasing of isothermal temperatures, but the fracture toughness KIC is varied in a saddle-backed curve with the increasing of isothermal temperature.The explanation of the inconsistency between ak and KIC values has been put forward according to the microstructural characteristics of this steel isothermally quenched at different temperatures.

Key words: 40CrMaSiMoVA steel, isothermal quenching, mixed structure

郭喜平;胡光立. 40CrMnSiMoVA钢等温淬火复合组织与韧性[J]. 航空学报, 1991, 12(1): 100-104.

Guo Xiping;Hu Guangli. MIXED STRUCTURE AND ITS TOUGHNESS OF ISOTHERMALLY QUENCHED 40CrMnSiMoVA STEEL[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1991, 12(1): 100-104.

E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

[1]	张明星;胡光立. 30CrMnSiNi2A钢强韧化热处理的研究[J]. 航空学报, 1990, 11(12): 576-582.
[2]	邹远鹏;胡光立. 0.4C-铬镍钼硅钢多冲疲劳裂纹起始寿命估算[J]. 航空学报, 1989, 10(9): 487-492.

40CrMnSiMoVA钢等温淬火复合组织与韧性

MIXED STRUCTURE AND ITS TOUGHNESS OF ISOTHERMALLY QUENCHED 40CrMnSiMoVA STEEL

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