Dislocation exhaustion and ultra-hardening of nanograined metals by phase transformation at grain boundaries

doi:10.1038/s41467-022-33257-1

IMR OpenIR

	Dislocation exhaustion and ultra-hardening of nanograined metals by phase transformation at grain boundaries
	Wu, Shangshu 1; Kou, Zongde 1; Lai, Qingquan 1,5; Lan, Si 1; Katnagallu, Shyam Swaroop 2; Hahn, Horst 1,2; Taheriniya, Shabnam 3; Wilde, Gerhard 1,3; Gleiter, Herbert 1,3,4; Feng, Tao 1
通讯作者	Lai, Qingquan(qingquanlai@hotmail.com) ; Feng, Tao(tao.feng@njust.edu.cn)
	2022-09-17
发表期刊	NATURE COMMUNICATIONS
卷号	13 期号:1 页码:8
摘要	The development of high-strength metals has driven the endeavor of pushing the limit of grain size (d) reduction according to the Hall-Petch law. But the continuous grain refinement is particularly challenging, raising also the problem of inverse Hall-Petch effect. Here, we show that the nanograined metals (NMs) with d of tens of nanometers could be strengthened to the level comparable to or even beyond that of the extremely-fine NMs (d similar to 5 nm) attributing to the dislocation exhaustion. We design the Fe-Ni NM with intergranular Ni enrichment. The results show triggering of structural transformation at grain boundaries (GBs) at low temperature, which consumes lattice dislocations significantly. Therefore, the plasticity in the dislocation-exhausted NMs is suggested to be dominated by the activation of GB dislocation sources, leading to the ultra-hardening effect. This approach demonstrates a new pathway to explore NMs with desired properties by tailoring phase transformations via GB physico-chemical engineering.
资助者	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Qing Lan project of Jiangsu province ; Natural Science Foundation of Jiangsu Province ; National Key R&D Program of China ; DOE Office of Science ; US DOE Office of Science, Office of Basic Energy Sciences ; Distinguished professor project of Jiangsu province
DOI	10.1038/s41467-022-33257-1
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[55001166] ; National Natural Science Foundation of China[51520105001] ; National Natural Science Foundation of China[51571119] ; National Natural Science Foundation of China[51871120] ; Fundamental Research Funds for the Central Universities[30919011404] ; Qing Lan project of Jiangsu province ; Natural Science Foundation of Jiangsu Province[BK20210352] ; Natural Science Foundation of Jiangsu Province[BK20200019] ; National Key R&D Program of China[2021YFB3802800] ; DOE Office of Science[DE-AC02-06CH11357] ; US DOE Office of Science, Office of Basic Energy Sciences ; Distinguished professor project of Jiangsu province
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000854873600005
出版者	NATURE PORTFOLIO
引用统计	被引频次：51[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/321006/175504
专题	中国科学院金属研究所
通讯作者	Lai, Qingquan; Feng, Tao
作者单位	1.Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Herbert Gleiter Inst Nanosci, Nanjing 210094, Peoples R China 2.Karlsruhe Inst Technol, Inst Nanotechnol, D-76021 Karlsruhe, Germany 3.Univ Munster, Inst Mat Phys, D-48149 Munster, Germany 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 5.Nanjing Tech Univ, Key Lab Light Weight Mat, Nanjing 211816, Peoples R China
推荐引用方式 GB/T 7714	Wu, Shangshu,Kou, Zongde,Lai, Qingquan,et al. Dislocation exhaustion and ultra-hardening of nanograined metals by phase transformation at grain boundaries[J]. NATURE COMMUNICATIONS,2022,13(1):8.
APA	Wu, Shangshu.,Kou, Zongde.,Lai, Qingquan.,Lan, Si.,Katnagallu, Shyam Swaroop.,...&Feng, Tao.(2022).Dislocation exhaustion and ultra-hardening of nanograined metals by phase transformation at grain boundaries.NATURE COMMUNICATIONS,13(1),8.
MLA	Wu, Shangshu,et al."Dislocation exhaustion and ultra-hardening of nanograined metals by phase transformation at grain boundaries".NATURE COMMUNICATIONS 13.1(2022):8.