Compressive Mechanical Properties of Normalized 10^#Low Carbon Steel  

作　　者：Jifeng Wei Xin Xie Ziyan Jin Wulong Fan Jifeng Zhang 

机构地区：[1]State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China [2]Key Laboratory of Forensic Marks,Ministry of Public Security,Beijing 100038,China

出　　处：《Journal of Beijing Institute of Technology》2017年第4期434-439,共6页北京理工大学学报（英文版）

基　　金：Supported by the Key Laboratory of Forensic Marks,Ministry of Public Security(2014FM KFKT03)

摘　　要：Compressive mechanical properties of 10^# lowcarbon steel with normalizing heat treatment are studied. A Gleeble system is adopted to analyze the quasi-static properties and thermal softening effects of heat treated 10^# steel,while a Hopkinson bar apparatus is used to investigate its dynamic characteristics under different strain rates. The results showthat yield stress of heat treated 10^# steel is more than that of untreated one at room temperature. When the specimens are tested at different temperatures,yield stresses decrease with increasing temperature except 573 K. Moreover,the influence of strain rate on yield stress are verified,which shows that the yield stress increases sharply from 500 s^-1 to 1 890 s^-1,while it changes a little from 1 890 s^-1 to 4 850 s^-1. The results indicate that yield stress is mainly influenced by hardening effect at lowstrain rate and controlled by both thermal softening effect and strain rate hardening effect at high strain rate.Compressive mechanical properties of 10^# lowcarbon steel with normalizing heat treatment are studied. A Gleeble system is adopted to analyze the quasi-static properties and thermal softening effects of heat treated 10^# steel,while a Hopkinson bar apparatus is used to investigate its dynamic characteristics under different strain rates. The results showthat yield stress of heat treated 10^# steel is more than that of untreated one at room temperature. When the specimens are tested at different temperatures,yield stresses decrease with increasing temperature except 573 K. Moreover,the influence of strain rate on yield stress are verified,which shows that the yield stress increases sharply from 500 s^-1 to 1 890 s^-1,while it changes a little from 1 890 s^-1 to 4 850 s^-1. The results indicate that yield stress is mainly influenced by hardening effect at lowstrain rate and controlled by both thermal softening effect and strain rate hardening effect at high strain rate.

关 键 词：mechanical properties Hopkinson bar thermal softening effect strain rate hardening effect 

分 类 号：TG142.1[一般工业技术—材料科学与工程]