Hot deformation behavior of Ni50.4Ti34.6Hf15 high-temperature shape memory alloy

doi:10.1016/j.jmrt.2023.12.084

IMR OpenIR

	Hot deformation behavior of Ni_50.4Ti_34.6Hf₁₅ high-temperature shape memory alloy
	Jiang, Muchi 1,2; Chen, Xiao 3; Nurly, Hasfi F.1,2; Yang, Xingyuan 2; Liu, Yi 2; Cai, Yusheng 2; Ren, Dechun 2; Ji, Haibin 1,2; Lei, Jiafeng 1,2
通讯作者	Ren, Dechun(dcren14s@imr.ac.cn) ; Ji, Haibin(hbji@imr.ac.cn)
	2024
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	28 页码:1165-1176
摘要	Due to their extreme requirements, conventional Ni-Ti shape memory alloys (SMAs) are no longer suitable for aerospace applications. Adding Hf to Ni-Ti SMAs can significantly enhance their suitability for aerospace applications, particularly in high-temperature environments. In this regard, the hot/thermal deformation behavior of Ni50.4Ti34.6Hf15 high-temperature shape memory alloys (HTSMAs) was systematically investigated by using a Gleeble-3800 thermocompression simulation machine. The results prove that the Ni50.4Ti34.6Hf15 alloys have more strain sensitivity than the temperature during the hot/thermal deformation process. In detail, the flow stress increases with the increase in strain rate and decreases with the increase in deformation temperature. From the microstructure evolution point of view, the recovery effect will increase with the increase in deformation temperature, and the recrystallization effect will increase with the increase in strain rate. Following the obtained stress-strain curves, the flow behavior of Ni50.4Ti34.6Hf15 alloys during hot/thermal deformation was established. A modified constitutive equations model was proposed using careful consideration of deformation temperature and strain rate. It was found that the calculated strain activation energy was 363.945 kJ/mol in the range of 700 similar to 800 degrees C and 512.489 kJ/mol in the range of 900 similar to 1000 degrees C. Based on the constitutive equation, the calculated values were consistent with the experimental values, which indicated reliable analysis with high prediction accuracy. Furthermore, the thermal processing maps under different conditions were constructed, and it was determined that the optimum hot/thermal deformation processing parameters of Ni50.4Ti34.6Hf15 alloys were 940 similar to 1000 degrees C and 0.01-0.04 s(-1).
关键词	High temperature shape memory alloy Hot deformation behavior Constitutive equation Thermal processing map
DOI	10.1016/j.jmrt.2023.12.084
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001161016600001
出版者	ELSEVIER
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/321006/184201
专题	中国科学院金属研究所
通讯作者	Ren, Dechun; Ji, Haibin
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shichangxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 3.Beijing Aerosp Prop Inst, Beijing 110076, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Muchi,Chen, Xiao,Nurly, Hasfi F.,et al. Hot deformation behavior of Ni_50.4Ti_34.6Hf₁₅ high-temperature shape memory alloy[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,28:1165-1176.
APA	Jiang, Muchi.,Chen, Xiao.,Nurly, Hasfi F..,Yang, Xingyuan.,Liu, Yi.,...&Lei, Jiafeng.(2024).Hot deformation behavior of Ni_50.4Ti_34.6Hf₁₅ high-temperature shape memory alloy.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,28,1165-1176.
MLA	Jiang, Muchi,et al."Hot deformation behavior of Ni_50.4Ti_34.6Hf₁₅ high-temperature shape memory alloy".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 28(2024):1165-1176.