大连理工大学主页平台管理系统付雪松 Corrosion Behavior and Microstructure of 2024 Aluminum Alloy Sheets by Shot Peen Forming in a Salt Spray Environment 中文主页

论文成果

A multiple nonmetallic atoms co-doped CrMoNbWTi refractory high-entropy alloy with ultra-high strength and hardness: 点击次数：; 发布时间： 2022-06-20; 发布时间：2022-06-20; 论文类型：期刊论文; 发表时间：2021-01-10; 发表刊物：MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING; 卷号：795; ISSN号：0921-5093; 关键字：Refractory high entropy alloy; Multi-phase alloy; Nonmetallic atoms doping; Refractory compounds strengthening; 摘要：A multiple nonmetallic atoms co-doped CrMoNbWTi refractory high-entropy alloy (RHEA) was prepared by mechanical alloying (MA) and spark plasma sintering (SPS). The as-sintered RHEA co-doped with C, N, and O exhibited ultra-high strength and hardness of 4345 MPa and 11.88 GPa, respectively. The microstructural observations indicated that both N and O were completely reacted with the refractory metallic elements to in-situ generate massive dispersed refractory compounds of (Nb,Ti)N and Ti2O3, while C was mainly dissolved in the BCC solid-solution phase. The strengthening mechanisms of the multiple nonmetallic atoms (C, N, and O) were discussed in this paper. The results demonstrated that the excellent mechanical properties were not only attributed to the traditional solid solution, grain boundary, Orowan strengthening mechanisms, but also to the additional C interstitial strengthening and dispersed refractory compounds of (Nb,Ti)N and Ti2O3.

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副教授博士生导师硕士生导师

性别：男

毕业院校：大连理工大学

学位：博士

所在单位：材料科学与工程学院

学科：材料加工工程

办公地点：大连理工大学铸造中工程心

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