期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2017.02.004
关键词
Dynamic response; Selective laser melting; AlSi10Mg alloy
类别
资金
- Israel Science Foundation [197/15]
- Israel Ministry of Science, Technology and Space [312471]
The dynamic response of selective laser melting (SLM)-processed and sand cast Al10SiMg samples were studied in a series of planar impact experiments. It was found that the dynamic response of SLM-processed alloys is virtually independent of the processing orientation. The dynamic yield strength and tensile (spall) strengths of SLM-processed material exceeds those of the cast alloy by factors of two and four, respectively. It was found that with increase in the tensile strain rate et, the fracture mode of SLM-processed material changes from apparently ductile at strain rates below (epsilon) over dot(t) approximate to 5 x 10(3) s(-1) to evidently brittle above this threshold. At approximately the same strain rate and at shear stress greater than 65 MPa, the mechanism governing the compressive (yield) strength of the SLM-processed alloy also changes from thermally-activated passage of obstacles by moving dislocations to dislocation over-barrier glide controlled by phonon viscous drag.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据