Strengthening CoCrFeNi high-entropy alloy by Laves and boride phases|Xiu-gang Chen;Gang Qin;Xue-feng Gao;Rui-run Chen;Qiang Song;Hong-zhi Cui|School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China - 期刊导航|首站-论文投稿智能助手|论文发表|论文智能投稿|期刊自助发表推荐|杂志社快速发表|查同导刊-域田数据官方网站

典型文献

Strengthening CoCrFeNi high-entropy alloy by Laves and boride phases

文献摘要：

To strengthen the face-centered-cubic (FCC) type CoCrFeNi high-entropy alloy (HEA) by in-situ reinforced phase, (CoCrFeNi)100-x(NbB2)x (x=0, 2, 4, 6, 8, at.％) alloys were prepared. Phase constitution, microstructure, tensile mechanical properties of the alloys were studied, and the mechanisms were discussed. Results show that the microstructure of all the reinforced alloys consists of the matrix FCC phase, Laves phase, and (Cr3Fe)Bx phase. The eutectic structure and (Cr3Fe)Bx phases are formed in the interdendritic region, and the eutectic structure is composed of Laves and FCC phases. When x increases from 0 to 8, i.e., with increase of Nb and B elements, the volume fraction of Laves and (Cr3Fe)Bx phases increases gradually from 0 to 5.84％ and 8.3％, respectively. Tensile testing results show that the ultimate strength of the alloys increases gradually from 409 MPa to 658 MPa, while the fracture strain decreases from 75％ to 1.6％. Fracture analysis shows that the crack originates from the (Cr3Fe)Bx phase. The CoCrFeNi alloys are mainly strengthened by the second phase (Laves phase and boride phase).

文献关键词：

中图分类号：

[1] 金属学与金属工艺（TG） / 金属学与热处理（TG1） / 金属材料（TG14） / 有色金属及其合金（TG146） / 重有色金属及其合金（TG146.1） / 钴（TG146.1+6）

[2] 医药、卫生（R） / 药学（R9） / 药理学（R96） / 实验药理学（R965）

[3] 金属学与金属工艺（TG） / 金属学与热处理（TG1） / 金属材料（TG14） / 铸铁（TG143） / 其他铸铁（TG143.9）

作者姓名：

Xiu-gang Chen;Gang Qin;Xue-feng Gao;Rui-run Chen;Qiang Song;Hong-zhi Cui

作者机构：

School of Materials Science and Engineering,Shandong University of Science and Technology,Qingdao 266500,China;School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China

文献出处：

中国铸造

引用格式：

[1]Xiu-gang Chen;Gang Qin;Xue-feng Gao;Rui-run Chen;Qiang Song;Hong-zhi Cui-.Strengthening CoCrFeNi high-entropy alloy by Laves and boride phases)[J].中国铸造,2022(06):457-463

A类：

NbB2,Cr3Fe

B类：

Strengthening,CoCrFeNi,high,entropy,by,Laves,boride,phases,To,face,centered,cubic,FCC,type,HEA,situ,reinforced,alloys,were,prepared,Phase,constitution,microstructure,tensile,mechanical,properties,studied,mechanisms,discussed,Results,that,consists,matrix,Bx,eutectic,formed,interdendritic,region,composed,When,increases,from,elements,volume,fraction,gradually,respectively,Tensile,testing,results,ultimate,while,fracture,strain,decreases,Fracture,analysis,shows,crack,originates,mainly,strengthened,second

AB值：

0.419405

相似文献

Phase, microstructure and compressive properties of refractory high-entropy alloys CrHfNbTaTi and CrHfMoTaTi

Jiaojiao Yi;Fuyang Cao;Mingqin Xu;Lin Yang;Lu Wang;Long Zeng-Laboratory of Advanced Multicomponent Materials,School of Mechanical Engineering,Jiangsu University of Technology,Changzhou 213001,China;School of Materials Science and Engineering,Jiangsu University,Zhenjiang 212013,China;School of Materials Science and Engineering,Jiangsu University of Technology,Changzhou 213001,China;School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China

Effect of trace yttrium on the microstructure, mechanical property and corrosion behavior of homogenized Mg–2Zn–0.1Mn–0.3Ca–xYbiological magnesium alloy

Mingfan Qi;Liangyu Wei;Yuzhao Xu;Jin Wang;Aisen Liu;Bing Hao;Jicheng Wang-Beijing Advanced Innovation Center for Materials Genome Engineering,School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China;Center International Group Co.,Ltd.,Beijing 100176,China;Zhuhai Runxingtai Electric Co.,Ltd.,Zhuhai 591000,China

Microstructure and mechanical properties of transient liquid phase bonding DD5 single-crystal superalloy to CrCoNi-based medium-entropy alloy

Shiwei Li;Jinglong Li;Junmiao Shi;Yu Peng;Xuan Peng;Xianjun Sun;Feng Jin;Jiangtao Xiong;Fusheng Zhang-State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072,China;Shaanxi Key Laboratory of Friction Welding Technologies,Northwestern Polytechnical University,Xi'an 710072,China

Enhanced strength and ductility in Ti46Al4Nb1Mo alloys via boron addition

Yingmei Tan;Ruirun Chen;Hongze Fang;Yangli Liu;Hongzhi Cui;Yanqing Su;Jingjie Guo;Hengzhi Fu-National Key Laboratory for Precision Hot Processing of Metals,Harbin Institute of Technology,Harbin 150001,China;School of Materials Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,China

Development of Ti-Al-Ta-Nb-(Re)near-α high temperature titanium alloy:Microstructure,thermal stability and mechanical properties