24小时热门版块排行榜    

Znn3bq.jpeg
汕头大学海洋科学接受调剂
查看: 1538  |  回复: 10
【奖励】 本帖被评价10次,作者imrsfb增加金币 8

[资源] 【Adv.Funct.Mater】超细纳米金线中的孪晶诱发脆性断裂

Fracture of Sub-20nm Ultrathin Gold Nanowires
    Yang Lu,    Jun Song,    Jian Yu Huang,    Jun Lou,*

Abstract
Fracture of metals at the nanoscale and corresponding failure mechanisms have recently attracted considerable interest. However, quantitative in situ fracture experiments of nanoscale metals are rarely reported. Here it is shown that, under uni-axial tensile loading, single crystalline ultrathin gold nanowires may fracture in two modes, displaying distinctively different fracture morphologies and ductility. In situ high resolution transmission electron microscopy (HRTEM) studies suggest that the unexpected brittle-like fracture was closely related to the observed twin structures, which is very different from surface dislocation nucleation/propagation mediated mechanism in ductile fracture mode. Molecular dynamics (MD) simulations further reveal the processes of shear-induced twin formation and damage initiation at the twin structure/free surface interface, confirming the experimentally observed differences in fracture morphology and ductility. Finally, a fracture criterion based on competition between twin formation and surface dislocation nucleation/propagation as a function of misalignment angle is discussed.
回复此楼

» 收录本帖的淘帖专辑推荐

材料科学最新前沿热点 材料学前沿、发现、猜想 材料力学精品专辑 纳米电化学材料及其相关
微纳米力学

» 猜你喜欢

» 本主题相关商家推荐: (我也要在这里推广)

» 本主题相关价值贴推荐,对您同样有帮助:

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

ljlbk

木虫 (正式写手)


★★★★★ 五星级,优秀推荐

值得一读,谢谢
3楼2011-09-19 15:34:43
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

jjsilence

新虫 (初入文坛)


★★★★★ 五星级,优秀推荐

лл~
8楼2012-05-31 13:29:37
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
简单回复
aishan2楼
2011-09-14 21:08   回复  
五星好评  
dale20084楼
2011-11-23 17:12   回复  
五星好评  顶一下,感谢分享!
2012-03-30 03:49   回复  
五星好评  顶一下,感谢分享!
jackiejia6楼
2012-03-30 11:48   回复  
五星好评  顶一下,感谢分享!
小兰花7楼
2012-05-28 08:44   回复  
五星好评  顶一下,感谢分享!
cameofan9楼
2013-09-09 10:47   回复  
五星好评  顶一下,感谢分享!
2014-07-09 15:17   回复  
五星好评  顶一下,感谢分享!
ailiuyishi11楼
2014-09-17 20:59   回复  
五星好评  顶一下,感谢分享!
相关版块跳转 我要订阅楼主 imrsfb 的主题更新
☆ 无星级 ★ 一星级 ★★★ 三星级 ★★★★★ 五星级
普通表情 高级回复 (可上传附件)
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 085801电气专硕272求调剂 +10 电气李 2026-04-13 11/550 2026-04-13 14:43 by 852137818
[考研] 290求调剂 +18 柯淮然 2026-04-12 20/1000 2026-04-13 12:56 by cyh—315
[考研] 一志愿085502,267分求调剂 +17 再忙也要吃饭啊 2026-04-08 18/900 2026-04-13 09:57 by darren_yym
[考研] 求调剂 +9 吃口冰激凌 2026-04-07 9/450 2026-04-13 08:46 by 紫曦紫棋
[考研] 电子信息270求调剂 +18 terminal469 2026-04-07 18/900 2026-04-12 16:23 by ajpv风雷
[考研] 求调剂 +16 张番茄不炒蛋 2026-04-10 17/850 2026-04-12 13:58 by 熬夜成!
[考研] 求调剂,262机械专硕 +8 嗯yyl 2026-04-08 8/400 2026-04-12 02:31 by 秋豆菜芽
[考研] 0860004 求调剂 309分 +9 Yin DY 2026-04-08 9/450 2026-04-11 22:55 by dongdian1
[考研] 297求调剂 +9 Kwgyz 2026-04-09 9/450 2026-04-11 10:09 by zhq0425
[考研] 一志愿211,化学学硕,310分,本科重点双非,求调剂 +17 努力奋斗112 2026-04-06 20/1000 2026-04-11 00:31 by wangjihu
[考研] 一志愿京区985,085401,与本科专业一致,电子信息工程, +4 阳光开朗的男孩 2026-04-10 4/200 2026-04-10 18:27 by shenrf
[论文投稿] mdpi小修rvr时间四五天了 20+3 哈哈high 2026-04-08 5/250 2026-04-10 16:02 by 北京莱茵润色
[考研] 344求调剂 +7 丶风雪夜归人丶 2026-04-09 7/350 2026-04-10 12:05 by pengliang8036
[考研] 一志愿中南大学物理学,英一66,求调剂 +4 长烟旖旎 2026-04-08 5/250 2026-04-10 10:31 by 颖果儿
[考研] 085404,285分求调剂 +12 薇薇考研 2026-04-07 14/700 2026-04-09 23:10 by parmtree
[考研] 调剂 +19 2261744733 2026-04-08 19/950 2026-04-09 19:11 by vgtyfty
[考研] 材料专硕初试分332一志愿西北工业大学, +12 故人?? 2026-04-09 12/600 2026-04-09 18:34 by Ccclqqq
[考研] 083200 初试305分 求调剂 暂不考虑跨专业 +15 Claireyyyy 2026-04-09 15/750 2026-04-09 16:11 by zhuimr
[考研] 334求调剂 +16 Riot2025 2026-04-08 17/850 2026-04-09 09:28 by wdyheheeh
[考研] 085602调剂 初试总分335 +3 19123253302 2026-04-06 3/150 2026-04-07 18:00 by jp9609
信息提示
请填处理意见