30CrMnSiNi2A钢的动态屈服强度研究  

Research on dynamic yield strength of steel 30CrMnSiNi2A

作　　者：薛智 张治民[2] 于建民 吴耀金 

机构地区：[1]山西省集成精密成形工程研究中心,山西太原030051 [2]中北大学材料科学与工程学院,山两太原030051

出　　处：《兵器材料科学与工程》2009年第1期10-13,共4页Ordnance Material Science and Engineering

摘　　要：采用分离式Hopkinson压杆技术,对经过不同热处理的低合金超高强度钢—30CrMnSiNi2A钢的动态力学行为进行研究。试样经过正火热处理、860℃淬火+600℃回火、860℃淬火+200℃回火热处理3种热处理制度后,经过动态力学实验得出:30CrMnSiNi2A钢在不同应变率下的屈服强度值随应变率增加而增大,呈现一定的应变率敏感性;在860℃淬火+200℃回火状态下,表现为一定的回火脆性;在860℃淬火+600℃回火状态时表现为优良的综合力学性能。The dynamic mechanical behavior of the different heat treated low-alloy superhigh strength steel-30CrMnSiNi2A was studied by using Split Hopkinson Bar technology,the test specimen passed through three kinds of different heat treatment systems ,including normalize tempering ,quenching at 860 ℃ and tempering at 600 ℃ ,quenching at 860 ℃ and tempering at 200 ℃. It was found that yield strength of 30CrMnSiNi2A steel showed certain strain rate sensitivity. Yield strength at various strain rates increased with strain rate rising; The test specimen had certain temper brittleness under the state of quenching at 860 ℃ and tempering at 200 ℃,the steel possessed excellent comprehensive mechanical properties under the state of quenching at 860 ℃ and tempering at 600 ℃.

关 键 词：30CRMNSINI2A钢 动态屈服强度 应变率 超高强度钢 屈服强度 

分 类 号：TG376[金属学及工艺—金属压力加工]