Strength and ductility synergy of Nb-alloyed Ni_(0.6)CoFe_(1.4) alloys

作     者：Jian Wu Heguo Zhu Zonghan Xie Jian Wu;Heguo Zhu;Zonghan Xie

作者机构：College of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China School of Mechanical EngineeringUniversity of AdelaideSA 5005Australia 

基　　金：financially supported by the National Natural Science Foundation of China (No. 51571118) 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2023年第30卷第4期

页      码：707-714页

摘      要：Designing strong, yet ductile, and body-centered cubic(BCC) medium-entropy alloys(MEAs) remains to be a challenge *** this study, the strength–ductility trade-off of Ni_(0.6)CoFe_(1.4)MEAs was tackled via introducing a BCC + face-centered cubic(FCC) dual-phase microstructure. Ni_(0.6)CoFe_(1.4)Nbx(x = 0, 0.05, 0.08, 0.10, and 0.15, in molar ratio) MEAs were prepared using vacuum induction melting. Results show that the new alloy is composed of BCC plus FCC dual phases featuring a network-like structure, and the BCC phase is the main phase in this alloy system. Moreover, the Nb0.10 MEA shows high strength and respectable tensile ductility, representing the best combination of the strength and fracture elongation among the alloys studied here. The remarkable strength of the Nb0.10 MEA is attributed to the combined effect of the solid solution strengthening, the precipitation hardening effect and the interface strengthening effect.

主 题 词：medium-entropy alloys alloying microstructure mechanical properties strengthening 

学科分类：0402[教育学-体育学类] 0303[法学-社会学类] 08[工学] 0805[工学-能源动力学] 080502[080502] 0703[理学-化学类] 

核心收录：

D　O　I：10.1007/s12613-022-2567-4

馆 藏 号：203117922...