Alloying effects of Ag on grain boundaries and alumina interfaces in copper: a first principles prediction
Alloying effects of Ag on grain boundaries and alumina interfaces in copper: a first principles prediction
复制标题
Ag 对铜中晶界和氧化铝界面的合金化效应:第一原理预测
DOI:
10.1039/c7ra08613j
复制
发表时间:
2017-10
期刊:
影响因子:
3.9
通讯作者:
Jiang Y
中科院分区:
文献类型:
--
作者:
Teng F.;Yi D. Q.;Teng F.;Jiang Y.;Wu C. P.;Yi D. Q.;Lan G. Q.;Jiang Y.;Song M.;Liu S. J.;Jiang Y.;Song M.;Liu S. J.;Jiang Y;Jiang Y;Jiang Y
The mechanical properties of oxide dispersion-strengthened copper are largely dictated by its internal interfaces, i.e. the oxide interfaces and the grain boundaries (GBs). Here we present a systematic first-principles study for evaluating the potential impact of Ag alloying on adhesion of Cu/α-Al2O3 interfaces and Cu grain boundaries as well. The results suggest that, in contrast to the strong segregation of S that is always detrimental, Ag only slightly segregates to the Al2O3 interfaces, strengthens the weak stoichiometric interface, and slightly weakens the strong Al-rich interface. Ag cannot pin S inside the matrix. The co-segregation of Ag with S modestly negates the detrimental influence of S on adhesion, but can hardly occur. Ag segregation to most of the GBs is found also to be weak, and reduces the adhesion slightly. The only one exception is on the Σ9 GB. Based on the gained insights, we suggest that Ag alloying has only limited benefits but can still be encouraged.
登录
查看更多内容
影响因子:
3.3
作者:
Jian Xu;Yong Jiang;Litong Yang;Jiangxu Li
通讯作者:
Jiangxu Li
影响因子:
3.9
作者:
G. Lan;Yong-zheng Jiang;D. Yi;Shaojun Liu
通讯作者:
G. Lan;Yong-zheng Jiang;D. Yi;Shaojun Liu
影响因子:
2.6
作者:
M. L. Kronberg;F. Wilson
通讯作者:
M. L. Kronberg;F. Wilson
影响因子:
9.7
作者:
P. Hou
通讯作者:
P. Hou
影响因子:
8.6
作者:
Frolov, T.;Divinski, S. V.;Mishin, Y.
通讯作者:
Mishin, Y.