退火态CoFeNiCrMnBx高熵合金微观组织和力学性能

侯丽丽; 郭强; 要玉宏; 刘江南

退火态CoFeNiCrMnB_x高熵合金微观组织和力学性能

1. 陕西工业职业技术学院, 陕西咸阳 712000;
2. 西部超导材料科技股份有限公司, 陕西西安 710018;
3. 西安工业大学, 陕西西安 710021

详细信息

作者简介:
侯丽丽,女,1983年生,博士,讲师。E-mail:houlili1983@126.com

中图分类号: TG139
计量
- 文章访问数: 18
- HTML全文浏览量: 2
- PDF下载量: 2
- 被引次数: 0
出版历程
- 收稿日期: 2022-09-15
- 网络出版日期: 2023-05-06

Microstructure and Mechanical Properties of Annealed CoFeNiCrMnB_x High Entropy Alloy

1. Shaanxi Polytechnic Institute, Xianyang 712000, China;
2. Western Superconducting Technologies Co., Ltd., Xi'an 710018, China;
3. Xi'an Technological University, Xi'an 710021, China

摘要

摘要: 采用真空电弧熔炼炉制备了CoFeNiCrMnB_x高熵合金,并对其退火处理。结果表明:CoFeNiCrMnB_0.15和CoFeNiCrMnB_0.20合金经1 100 ℃×20 h退火后,枝晶间组织均为颗粒状Cr₂B相,且随着B含量的增加,颗粒状Cr₂B相也增多。CoFeNiCrMnB_0.20合金的屈服强度和抗拉强度分别为496 MPa和890 MPa,较铸态CoFeNiCrMn合金的分别提高了104.0%和79.4%。
- 高熵合金 /
- 退火 /
- 微观组织 /
- 力学性能
Abstract: CoFeNiCrMnB_x high entropy alloy is prepared by vacuum arc melting furnace and annealed. The results show that when the CoFeNiCrMnB_0.15 and CoFeNiCrMnB_0.20 alloys are annealed at 1 100 ℃ for 20 hours, their interdendritic structures are granular Cr₂B phase, and that the granular Cr₂B phase increases with the increase of B content. The yield strength and tensile strength of CoFeNiCrMnB_0.20 alloy are 496 MPa and 890 MPa, which are 104.0% and 79.4% higher than those of the as cast CoFeNiCrMn alloy.
- high entropy alloy /
- annealing /
- microstructure /
- mechanical property

HTML全文

参考文献(10)

[1]	CHUAN Z, MICHAEL C, SHIH K L. Progress in hi-ghentropy[J]. The Journal of The Minerals, Metals and Materials Society, 2019,71(10):3417-3418.
[2]	GLUDOVATZ B, GEORGE E P, RITCHIE R O. Pr-ocessing, microstructure and mechanical properties of the CrMnFeCoNi high-entropy alloy[J]. JOM, 2015, 67(10):2262-2270.
[3]	师晓莉. Fe-Cr-B-C系高硼铁基合金硬质相形态控制及其对性能影响研究[D]. 昆明:昆明理工大学, 2016.
[4]	CHEN J, YAO Z H, WANG X B, et al. Effect of C content on microstructure and tensile properties of a-scast CoCrFeMnNi high entropy alloy[J]. Materials Chemistry and Physics, 2018, 210:136-145.
[5]	ZHANG C, CHEN G J, DAI P Q. Evolution of the m-icrostructure and properties of laser-clad FeCr-NiCoB_<i>x high-entropy alloy coatings[J]. Materials Science and Technology, 2016, 32(16):1666-1672.
[6]	SEOL J B, BAE J W, LI Z M, et al. Boron doped ultrastrong and ductile high-entropy alloys[J]. Acta Materialia, 2018, 151:366-376.
[7]	RAABE D, HERBIG M, SANDLOBES S, et al. Ef-fect of annealing heat treatment on microstructural evolution and tensile behavior of Al_0.5CoFeNiCrMn high entropy alloy[J]. Solid State Materials Science, 2014,18:253-262.
[8]	CHEN Q S, LU Y P, DONG Y, et al. Effect of minor B addition on microstructure and properties of AlCoCrFeNi multi-compenent alloy[J]. Transactions of Nonferrous Metals Society of China, 2015, 25(9):2958-2964.
[9]	TANG Q H, CAI J B, WU G F, et al. Effects of heat treatment on microstructure and mechanical properties of Al_0.5CoCrFeNiB_0.2 high entropy alloy[J]. Foundry, 2011, 60(1):24-27.
[10]	TANG Z, SENKOV O N, PARISH C M, et al. Ten-sile ductility of an AlCoCrFeNi multi-phase hig-hentropy alloy through hot isostatic pressing (HIP) and homogenization[J]. Materials Science and Engineering:A, 2015, 647:229-240.