Temperature dependence of deformation mechanisms of a new Ni-based superalloy and high-temperature property optimization

doi:10.1016/j.jmrt.2023.09.297

IMR OpenIR

	Temperature dependence of deformation mechanisms of a new Ni-based superalloy and high-temperature property optimization
	Zhao, Pengfei 1,2; Zhu, Heyu 1,2; Hou, Kunlei 1,3; Wang, Min 1,3; Hao, Xianchao 1,3; Xing, Weiwei 1,3; Gao, Ming 1,3; Chen, Xing-Qiu 1,3; Ma, Ying-Che 1,3
通讯作者	Wang, Min(minwang@imr.ac.cn) ; Ma, Ying-Che(ycma@imr.ac.cn)
	2023-11-01
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	27 页码:1214-1222
摘要	The influence of temperature on the deformation mechanisms of a new Ni-based super -alloy named K4800 containing 35 vol% g' were investigated. We studied the temperature dependence of deformation mechanisms and used the alloying method to optimize the high-temperature properties of the alloy. By analyzing slightly deformed microstructures, the dominant deformation mechanisms of alloy K4800 at the yielding stage were identified as: the anti-phase boundary (APB) shearing from RT to 600 degrees C, stacking faults (SFs) shearing and Orowan looping at 600-800 degrees C, and Orowan looping/cross-slip/climbing above 800 degrees C. We found that it was the activation of thermally assisted processes declined the strengthening effect of g' phase and impaired the high-temperature strength of the alloy above 800 degrees C. First-principles calculations were employed to investigate the effects of alloying elements on the formation and stability of stacking faults in K4800 alloy by using a 48-atom Ni3(Al, Ti) orthorhombic supercell. Considering the effectiveness of elements in lowering stacking faults energy, Co and W elements were chosen to alleviate the strength degradation of K4800 alloy above 800 degrees C. The deformation mechanism and properties of these three alloys at elevated temperature were also revealed and discussed.(c) 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
关键词	Ni-based superalloy Temperature effect Deformation mechanism First-principles calculations STEM
DOI	10.1016/j.jmrt.2023.09.297
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:001105354300001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/177337
专题	中国科学院金属研究所
通讯作者	Wang, Min; Ma, Ying-Che
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.IMR NMSA, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Pengfei,Zhu, Heyu,Hou, Kunlei,et al. Temperature dependence of deformation mechanisms of a new Ni-based superalloy and high-temperature property optimization[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2023,27:1214-1222.
APA	Zhao, Pengfei.,Zhu, Heyu.,Hou, Kunlei.,Wang, Min.,Hao, Xianchao.,...&Ma, Ying-Che.(2023).Temperature dependence of deformation mechanisms of a new Ni-based superalloy and high-temperature property optimization.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,27,1214-1222.
MLA	Zhao, Pengfei,et al."Temperature dependence of deformation mechanisms of a new Ni-based superalloy and high-temperature property optimization".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 27(2023):1214-1222.