Enhanced high-temperature strength of austenitic steels by nanotwins and nanoprecipitates

doi:10.1016/j.scriptamat.2023.115938

IMR OpenIR

	Enhanced high-temperature strength of austenitic steels by nanotwins and nanoprecipitates
	Liu, D. Y.1,2; Shen, Z. L.1,2; Ren, C. X.1,3; Li, Q.1; Tao, N. R.1
通讯作者	Li, Q.(qli13s@imr.ac.cn) ; Tao, N. R.(nrtao@imr.ac.cn)
	2024-03-15
发表期刊	SCRIPTA MATERIALIA
ISSN	1359-6462
卷号	242 页码:5
摘要	A bulk nanotwinned solutionized austenitic steel was prepared by plastic deformation, followed by partial recrystallization treatment. Subsequent aging treatment resulted in extensive precipitation of gamma-prime phase along twin boundaries. These nanoprecipitates are coherent with the austenite matrix on both sides, namely inheriting the twin boundary. The nanotwins constrained by these nanoprecipitates exhibit exceptional thermal stability and efficiently hinder dislocation movement at high temperatures. As a result, the sample exhibits a high yield strength of 780 MPa at 700 celcius. In comparison to the peak-aged coarse-grained sample, the strength at 700 celcius is increased by similar to 60 % in the sample containing similar to 49 vol.% nanotwins combined with second phase. This kind of combined strengthening from nanotwins and nanoprecipitates provides a new strategy to further strengthen materials at high temperatures.
关键词	nanotwins precipitation strength austenitic steels high temperature
DOI	10.1016/j.scriptamat.2023.115938
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001160589400001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：8[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/321006/184336
专题	中国科学院金属研究所
通讯作者	Li, Q.; Tao, N. R.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Hong Kong Polytech Univ, Dept Ind & Syst Engn, Hung Hom, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Liu, D. Y.,Shen, Z. L.,Ren, C. X.,et al. Enhanced high-temperature strength of austenitic steels by nanotwins and nanoprecipitates[J]. SCRIPTA MATERIALIA,2024,242:5.
APA	Liu, D. Y.,Shen, Z. L.,Ren, C. X.,Li, Q.,&Tao, N. R..(2024).Enhanced high-temperature strength of austenitic steels by nanotwins and nanoprecipitates.SCRIPTA MATERIALIA,242,5.
MLA	Liu, D. Y.,et al."Enhanced high-temperature strength of austenitic steels by nanotwins and nanoprecipitates".SCRIPTA MATERIALIA 242(2024):5.