摘要
采用万能试验机和分离式霍普金森压杆(SHPB)对Zr CuNiAlAg块体非晶合金的动静态力学性能进行了研究。结果表明:Zr CuNiAlAg块体非晶合金在准静态条件下,应变率对其压缩强度、弹性模量等影响不大;但从准静态到动态条件下,随着应变率的提高,应变率效应逐渐变得显著。Zr CuNiAlAg块体非晶合金在室温条件下呈脆性断裂特征,属于弹脆性材料,JH-2本构模型有望能很好的描述其不同应变率下的力学行为。
The dynamic and static mechanical properties of ZrCuNiAlAg block amorphous were analyzed by universal testing machine and split hopkinson pressure bar(SHPB).The results show that the strain rate has little effect on the compressive strength and elastic modulus of ZrCuNiAlAg amorphous alloy under quasi-static condition.However,with the increase of strain rate from quasi-static to dynamic conditions,the strain rate effect gradually becomes significant.ZrCuNiAlAg bulk amorphous alloy is brittle fracture at room temperature,which belongs to the elastic-brittle material.JH-2 constitutive model is expected to describe the mechanical behavior under different strain rates.
作者
石永相
施冬梅
SHI Yongxiang;SHI Dongmei(Ordnance Engineering College,Ammunition Engineering Department,Shijiazhuang 050003,China)
出处
《热加工工艺》
北大核心
2019年第6期83-86,90,共5页
Hot Working Technology
关键词
动静态力学性能
万能试验机
SHPB
应变率效应
dynamic and static mechanical properties
universal testing machine
SHPB
strain rate effect
