Enhancing strength and toughness synergistically via graphene-induced twinning in nanocrystalline nickel

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成果类型：

期刊论文

作者：

Jiang, Zhihao;Liu, Xiaochun;Zhang, Yong;Lu, Chong;Chen, Xiang;...

通讯作者：

Liang, JM

作者机构：

[Liang, JM; Liang, Jiamiao; Wang, Jun; Jiang, Zhihao] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Adv High Temp Mat & Precis Formi, Shanghai 200240, Peoples R China.

[Liang, JM; Liang, Jiamiao; Wang, Jun; Jiang, Zhihao] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China.

[Liu, Xiaochun] Changsha Univ Sci & Technol, Coll Mat Sci & Engn, Inst Met, Changsha 410004, Peoples R China.

[Zhang, Yong] Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Herbert Gleiter Inst Nanosci, Nanjing 210094, Peoples R China.

[Lu, Chong] Shanghai Jiao Tong Univ, Instrumental Anal Ctr, Shanghai, Peoples R China.

通讯机构：

[Liang, JM ] S

Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Adv High Temp Mat & Precis Formi, Shanghai 200240, Peoples R China.

Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China.

语种：

英文

关键词：

Nanocrystalline;Hall-petch relation;Metal-graphene composites;Twinning;Nickel

期刊：

Materials Science and Engineering A-structural Materials Properties Microstructure and Processing

ISSN：

0921-5093

年：

2022

卷：

838

页码：

142784

DOI：

10.1016/j.msea.2022.142784

基金类别：

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51971143]; SJTU Global Strategic Partnership Fund [2019 SJTU-UNSW]; National Science and Technology Major Project [2017-VI-0013-0085]

机构署名：

本校为其他机构

院系归属：

材料科学与工程学院

摘要：

The Hall-Petch relation predicted strengthening may fail at extremely fine scale, mainly due to the stress-induced dynamic grain growth. In this letter, we report a new strategy of stabilizing grain boundaries by introducing uniformly dispersed graphene into electrodeposited nanocrystalline (NC) Ni. After deformation, the average grain size of graphene-doped NC Ni increases slightly (from 33 nm to 40 nm), while the undoped NC Ni shows a notable increase in grain size (from 35 nm to 51 nm). This discrepancy was attributed to the grain boundary pinning effect from graphene, which in turn activat...

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Enhancing strength and toughness synergistically via graphene-induced twinning in nanocrystalline nickel

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