Microstructure and mechanical properties of in-situ formed ZrC nanoparticles dispersion-strengthened tungsten alloy

doi:10.1016/j.ijrmhm.2022.105912

	Microstructure and mechanical properties of in-situ formed ZrC nanoparticles dispersion-strengthened tungsten alloy
	Cheng, X.1,2; Jing, K.1,2; Xie, Z. M.2; Liu, R.1,2; Wu, X. B.2; Wang, X. P.2; Fang, Q. F.1,2; Liu, C. S.2
刊名	INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
	2022-09-01
卷号	107
关键词	Tungsten Dispersion strengthening Microstructure Dissolution-precipitation Mechanical properties
ISSN号	0263-4368
DOI	10.1016/j.ijrmhm.2022.105912
通讯作者	Liu, R.(liurui@issp.ac.cn) ; Fang, Q. F.(qffang@issp.ac.cn)
英文摘要	W-Zr-C alloy with nanoscale ZrC particles dispersion was fabricated via powder metallurgy method using W, ZrH2 and nanoscale C powders as starting materials. The average size of in-situ formed particles is 55 nm. The smaller particles in the grain interior are dominantly ZrC particles. Zr decomposed from ZrH2 can also react with impurity oxygen to form ZrO2 particles and reduce the detrimental effects of oxygen on grain boundaries. The asswaged W-Zr-C alloy is ductile at 200 degrees C, and the ultimate tensile strength and total elongation (TE) at 300 degrees C are 643.5 MPa and 23.5%, respectively. After annealing at 1400 degrees C, the UTS at 300 degrees C of W-Zr-C alloy is still as high as 611.4 MPa and the TE is 33.2%. The recrystallization start temperature of the as-swaged W-Zr-C alloy is between 1400 and 1500 degrees C, which is 200 degrees C higher than that of pure W. The in-situ formation of nanoscale second-phase particles via the dissolution-precipitation mechanism provides a feasible strategy for improving the low-temperature toughness and high-temperature stability of tungsten alloys.
资助项目	National Key Research and Development Program of China[2019YFE03120001] ; National Key Research and Development Program of China[2017YFE0302400] ; National Key Research and Development Program of China[2017YFA0402800] ; National Natural Science Foundation of China[51671184] ; National Natural Science Foundation of China[11735015] ; National Natural Science Foundation of China[51971213] ; National Natural Science Foundation of China[52173303] ; National Natural Science Foundation of China[52171084] ; HIRFL User Project[HIR19PY006] ; HFIPS Director's Fund, Chinese Academy of Sciences[YZJJ202102] ; HFIPS Director's Fund, Chinese Academy of Sciences[YZJJZX202012]
WOS关键词	PLASMA-FACING COMPONENTS ; HELIUM-COOLED DIVERTOR ; THERMAL-STABILITY ; ZIRCONIUM CARBIDE ; RESISTANCE ; PARTICLES
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000811224900004
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; HIRFL User Project ; HFIPS Director's Fund, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131293]
专题	中国科学院合肥物质科学研究院
通讯作者	Liu, R.; Fang, Q. F.
作者单位	1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HFIPS, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Cheng, X.,Jing, K.,Xie, Z. M.,et al. Microstructure and mechanical properties of in-situ formed ZrC nanoparticles dispersion-strengthened tungsten alloy[J]. INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS,2022,107.
APA	Cheng, X..,Jing, K..,Xie, Z. M..,Liu, R..,Wu, X. B..,...&Liu, C. S..(2022).Microstructure and mechanical properties of in-situ formed ZrC nanoparticles dispersion-strengthened tungsten alloy.INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS,107.
MLA	Cheng, X.,et al."Microstructure and mechanical properties of in-situ formed ZrC nanoparticles dispersion-strengthened tungsten alloy".INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS 107(2022).