退火温度对V-Ti-Mo钢析出相和力学性能的影响

doi:10.13251/j.issn.0254-6051.2020.03.005

金属热处理 ›› 2020, Vol. 45 ›› Issue (3): 20-24.DOI: 10.13251/j.issn.0254-6051.2020.03.005

退火温度对V-Ti-Mo钢析出相和力学性能的影响

尉文超, 薛彦均, 孙挺, 王毛球, 时捷

钢铁研究总院特殊钢研究所, 北京 100081

收稿日期:2019-11-14 出版日期:2020-03-25 发布日期:2020-04-03
作者简介:尉文超(1988—),男,博士,主要研究方向为合金结构钢,E-mail:yuwenchao@nercast.com。

Effect of annealing temperature on precipitate and mechanical properties of V-Ti-Mo steel

Yu Wenchao, Xue Yanjun, Sun Ting, Wang Maoqiu, Shi Jie

Institute of Special Steels, Central Iron and Steel Research Institute, Beijing 100081, China

Received:2019-11-14 Online:2020-03-25 Published:2020-04-03

摘要/Abstract

摘要：

研究了V-Ti-Mo钢经不同温度退火后的组织和力学性能。结果表明,随着退火温度的升高,试验钢中的珠光体组织逐渐发生分解,MC型析出相逐渐增多,强度增加。试验钢轧态时MC型析出相主要为Ti(C, N),经过退火后出现了(V, Mo)C析出相,并且随着退火温度的升高,(V, Mo)C相逐渐增多。根据钢铁材料的强化理论对试验钢的屈服强度进行了理论计算,与实测结果符合较好,表明析出强化是退火后强度增加的主要原因。

关键词: V-Ti-Mo钢, 退火温度, 屈服强度, 析出强化

Abstract:

Microstructure and mechanical properties of V-Ti-Mo steel were characterized after annealing at different temperatures. The results show that pearlite structure begins to decompose, and the amount of MC type precipitate in the experimental steels increases as the annealing temperature increasing. The MC type carbide in the hot rolled steel is mainly Ti(C, N), while (V, Mo)C gradually precipitates by increasing annealing temperature. The yield strength of the tested steel is calculated according to steel strengthening theory, the results show good agreement with the experimental data, which indicates that precipitation strengthening is the main reason for the strength increase after annealing.

Key words: V-Ti-Mo steel, annealing temperature, yield strength, precipitation strengthening

中图分类号:

TG142

尉文超, 薛彦均, 孙挺, 王毛球, 时捷. 退火温度对V-Ti-Mo钢析出相和力学性能的影响[J]. 金属热处理, 2020, 45(3): 20-24.

Yu Wenchao, Xue Yanjun, Sun Ting, Wang Maoqiu, Shi Jie. Effect of annealing temperature on precipitate and mechanical properties of V-Ti-Mo steel[J]. HTM, 2020, 45(3): 20-24.

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退火温度对V-Ti-Mo钢析出相和力学性能的影响

Effect of annealing temperature on precipitate and mechanical properties of V-Ti-Mo steel

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