Enhanced strength-ductility synergy in a novel V-containing γ″-strengthened CoCrNi-based multi-component alloy
Enhanced strength-ductility synergy in a novel V-containing γ″-strengthened CoCrNi-based multi-component alloy
复制标题
DOI：
10.1016/j.msea.2021.141289
复制
发表时间：
2021-04
期刊：
影响因子：
--
通讯作者：
Yunwei Pan;A. Dong;Yang Zhou;Dafan Du;Donghong Wang;G. Zhu;Bao-de Sun
中科院分区：
文献类型：
--
作者：
Yunwei Pan;A. Dong;Yang Zhou;Dafan Du;Donghong Wang;G. Zhu;Bao-de Sun
在含V的CoCrNi基合金中引入了γ″相，上级强度-塑性协同效应（极限抗拉强度和延伸率的乘积~ 51.8GPa·%，屈服强度~ 890.6MPa）优于γ″强化和CoCrNi基合金。首次利用同步辐射X射线衍射（Synchrotron XRD）技术研究了含V CoCrNi基合金中γ″相的存在，发现γ″/γ晶格错配度适中的γ″/γ相具有良好的共格强化和抗粗化性能。
γ″ precipitates have been introduced into V-containing CoCrNi-based alloy, showing superior strength-ductility synergy (product of ultimate-tensile-strength and elongation ~51.8 GPa·%, yield-strength ~890.6 MPa) than reported γ″-strengthened and CoCrNi-based alloys. Synchrotron XRD was first-time used to identify the existence of γ″ phase in V-containing CoCrNi-based alloys, where moderate γ″/γ lattice misfit results in good combination of coherency-strengthening and coarsening-resistance.