The Microstructures, Mechanical Properties, and Deformation Mechanism of B2-Hardened NbTiAlZr-Based Refractory High-Entropy Alloys

doi:10.3390/ma16247592

IMR OpenIR

	The Microstructures, Mechanical Properties, and Deformation Mechanism of B2-Hardened NbTiAlZr-Based Refractory High-Entropy Alloys
	Tang, Guangquan 1; Shao, Xu 1; Pang, Jingyu 1; Ji, Yu 1; Wang, Aimin 1; Li, Jinguo 1; Zhang, Haifeng 2; Zhang, Hongwei 1
通讯作者	Pang, Jingyu(jypang17s@imr.ac.cn) ; Zhang, Hongwei(hongweizhang@imr.ac.cn)
	2023-12-01
发表期刊	MATERIALS
卷号	16 期号:24 页码:10
摘要	The NbTiAlZrHfTaMoW refractory high-entropy alloy (RHEA) system with the structure of the B2 matrix (antiphase domains) and antiphase domain boundaries was firstly developed. We conducted the mechanical properties of the RHEAs at 298 K, 1023 K, 1123 K, and 1223 K, as well as typical deformation characteristics. The RHEAs with low density (7.41 similar to 7.51 g/cm(3)) have excellent compressive-specific yield strength ( sigma YS/rho) at 1023 K (similar to 131 MPa center dot cm(3)/g) and 1123 K (similar to 104.2 MPa center dot cm(3)/g), respectively, which are far superior to most typical RHEAs. And, they still keep appropriate plastic deformability at room temperature ( epsilon > 0.35). The superior specific yield strengths are mainly attributed to the solid solution strengthening induced by the Zr element. The formation of the dislocation slip bands with [111](10 $$(1) over bar) and [111](11 $$(2) over bar) directions and their interaction provide considerable plastic deformation capability. Meanwhile, dynamic recrystallization and dislocation annihilation accelerate the continuous softening after yielding at 1123 K.
关键词	refractory high-entropy alloys B2 phase specific yield strength strain softening deformation microstructure
资助者	Liaoning Key Research and Development Program
DOI	10.3390/ma16247592
收录类别	SCI
语种	英语
资助项目	Liaoning Key Research and Development Program
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:001132600800001
出版者	MDPI
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/183496
专题	中国科学院金属研究所
通讯作者	Pang, Jingyu; Zhang, Hongwei
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Tang, Guangquan,Shao, Xu,Pang, Jingyu,et al. The Microstructures, Mechanical Properties, and Deformation Mechanism of B2-Hardened NbTiAlZr-Based Refractory High-Entropy Alloys[J]. MATERIALS,2023,16(24):10.
APA	Tang, Guangquan.,Shao, Xu.,Pang, Jingyu.,Ji, Yu.,Wang, Aimin.,...&Zhang, Hongwei.(2023).The Microstructures, Mechanical Properties, and Deformation Mechanism of B2-Hardened NbTiAlZr-Based Refractory High-Entropy Alloys.MATERIALS,16(24),10.
MLA	Tang, Guangquan,et al."The Microstructures, Mechanical Properties, and Deformation Mechanism of B2-Hardened NbTiAlZr-Based Refractory High-Entropy Alloys".MATERIALS 16.24(2023):10.