典型文献
Exceptional strength-ductility synergy of additively manufactured CoCrNi medium-entropy alloy achieved by lattice defects in heterogeneous microstructures
文献摘要：
The selective laser melting(SLM)with subsequent cold rolling and annealing is used to produce high-density lattice defects and grain refinement in the CoCrNi medium-entropy alloys(MEAs).The superior comprehensive mechanical properties have been achieved in the as-SLMed CoCrNi alloy after rolling and annealing.The as-SLMed alloys delivered the yield strength of 693.4 MPa,the ultimate tensile strength of 912.7 MPa and the fracture strain of 54.4％.After rolling with 70％reduction in thickness and annealing at 700℃for 2 h.the yield strength,ultimate tensile strength and fracture strain reached 1161.6 MPa,1390.8 MPa and 31.5％,respectively.The exceptional strength-ductility synergy is mainly attributed to the refined hierarchical microstructures with coarsening grains at a level of 30 pm and ultrafine grains at a level of 1 pm,and the heritage of dislocation-formed sub-grains and other lattice defects.This investi-gation demonstrates that the SLM with subsequent rolling and annealing is beneficial to fabricate high strength and ductile MEAs with single face-centered cubic(fcc)structure.
文献关键词：
中图分类号：
作者姓名：
Jianying Wang;Jianpeng Zou;Hailin Yang;Lijun Zhang;Zhilin Liu;Xixi Dong;Shouxun Ji
作者机构：
State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China;Light Alloy Research Institute,College of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China;Brunel Centre for Advanced Solidification Technology(BCAST),Brunel University London,Uxbridge,Middlesex UB8 3PH,United Kingdom
文献出处：
引用格式：
[1]Jianying Wang;Jianpeng Zou;Hailin Yang;Lijun Zhang;Zhilin Liu;Xixi Dong;Shouxun Ji-.Exceptional strength-ductility synergy of additively manufactured CoCrNi medium-entropy alloy achieved by lattice defects in heterogeneous microstructures)[J].材料科学技术（英文版）,2022(32):61-70
A类：
SLMed
B类：
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AB值：
0.499404
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