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。
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.
作者
尉文超
薛彦均
孙挺
王毛球
时捷
Yu Wenchao;Xue Yanjun;Sun Ting;Wang Maoqiu;Shi Jie(Institute of Special Steels,Central Iron and Steel Research Institute,Beijing 100081,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2020年第3期20-24,共5页
Heat Treatment of Metals
关键词
V-Ti-Mo钢
退火温度
屈服强度
析出强化
V-Ti-Mo steel
annealing temperature
yield strength
precipitation strengthening
