A Transforming Metal Nanocomposite with Large Elastic Strain, Low Modulus, and High Strength - 文章详情页

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摘要：

Freestanding　nanowires　have　ultrahigh　elastic　strain　limits　(4　to　7%)　and　yield　strengths,　but　exploiting　their　intrinsic　mechanical　properties　in　bulk　composites　has　proven　to　be　difficult.　We　exploited　the　intrinsic　mechanical　properties　of　nanowires　in　a　phase-transforming　matrix　based　on　the　concept　of　elastic　and　transformation　strain　matching.　By　engineering　the　microstructure　and　residual　stress　to　couple　the　true　elasticity　of　Nb　nanowires　with　the　pseudoelasticity　of　a　NiTi　shape-memory　alloy,　we　developed　an　in　situ　composite　that　possesses　a　large　quasi-linear　elastic　strain　of　over　6%,　a　low　Young＇s　modulus　of　similar　to　28　gigapascals,　and　a　high　yield　strength　of　similar　to　1.65　gigapascals.　Our　elastic　strain-matching　approach　allows　the　exceptional　mechanical　properties　of　nanowires　to　be　exploited　in　bulk　materials.

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作者机构：

[ 1 ] [Hao, Shijie]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 2 ] [Cui, Lishan]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 3 ] [Jiang, Daqiang]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 4 ] [Jiang, Jiang]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 5 ] [Liu, Zhenyang]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 6 ] [Wang, Shan]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 7 ] [Yu, Cun]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 8 ] [Shi, Xiaobin]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 9 ] [Du, Minshu]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 10 ] [Yang, Feng]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 11 ] [Zheng, Yanjun]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[ 12 ] [Han, Xiaodong]Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, Beijing 100124, Peoples R China
[ 13 ] [Mao, Shengcheng]Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, Beijing 100124, Peoples R China
[ 14 ] [Zhang, Ze]Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, Beijing 100124, Peoples R China
[ 15 ] [Ren, Yang]Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA
[ 16 ] [Liu, Yinong]Univ Western Australia, Sch Mech & Chem Engn, Crawley, WA 6009, Australia
[ 17 ] [Wang, Yandong]Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
[ 18 ] [Li, Yan]Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
[ 19 ] [Ren, Xiaobing]Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
[ 20 ] [Ding, Xiangdong]Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
[ 21 ] [Ren, Xiaobing]Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Xian 710049, Peoples R China
[ 22 ] [Ding, Xiangdong]Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Xian 710049, Peoples R China
[ 23 ] [Ren, Xiaobing]Natl Inst Mat Sci, Ferro Phys Grp, Tsukuba, Ibaraki 3050047, Japan
[ 24 ] [Zhang, Ze]Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310058, Zhejiang, Peoples R China
[ 25 ] [Li, Xiaodong]Univ S Carolina, Dept Mech Engn, Columbia, SC 29208 USA
[ 26 ] [Brown, Dennis E.]No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA
[ 27 ] [Li, Ju]MIT, Dept Nucl Sci & Engn, Cambridge, MA 02139 USA
[ 28 ] [Li, Ju]MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

通讯作者信息：

[Cui, Lishan]China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China

电子邮件地址：

lishancui63@126.com |
xdhan@bjut.edu.cn |
ren@aps.anl.gov |
liju@mit.edu

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