On the mechanistic origins of maximum strength in nanocrystalline metals

查看全文 作　　者：Ankit [1]Gupta;Jacob [1]Gruber;Satish [2]S.Rajaram;Gregory [3]B.Thompson;David [4]L.McDowell;Garritt [1]J.Tucker

机构地区：[1]Colorado School of Mines,Mechanical Engineering,Golden,CO 80401,USA;[2]Department of Mechanical Engineering,Drexel University,Philadelphia,PA 19104,USA;[3]Department of Metallurgical and Materials Engineering,University of Alabama,Tuscaloosa,AL 35487,USA;[4]Department of Mechanical Engineering,Georgia Institute of Technology,Atlanta,GA 30332,USA

出　　处：《npj Computational Materials》索引2020年第1期,共12页

基　　金：Authors G.J.T,G.B.T.,and A.G.are grateful for the support of ARO through grant no.W911NF-17-1-0528;greatly acknowledge ARO Program Manager,Dr.Michael Bakas.G.J.T.and A.G.also acknowledge XSEDE allocation charge no.TG-DMR190011;hpc resource mio at Colorado School of Mines for allowing the reported atomistic simulations.D.L.M.is grateful for the support of the NSF CMMI-1761553. 摘　　要：The maximum strength of polycrystalline metals/alloys has been suggested to occur at nanoscale grain sizes where the governing deformation mechanism transitions from dislocation plasticity to grain boundary mediated deformation.Despite tremendous progress recently uncovering links between transitions in nanoscale mechanisms and peak strength,the scientific literature is mostly devoid of any quantitative support,owing to the difficulty in measuring the resolved contribution of individual mechanisms to microstructural strain accommodation.In this study,the contribution of individual nanoscale mechanisms to the overall deformation of nanocrystalline Ni is calculated from atomistic simulations leveraging continuum-based kinematic metrics to compute mechanistic contributions to microstructural strain. 关键词：STRENGTH DEFORMATION GRAIN

相关文献

参考文献（70）
引证文献（1）
耦合文献（0）

参考文献(70)

引证文献(1)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

On the mechanistic origins of maximum strength in nanocrystalline metals

参考文献(70)

引证文献(1)

用户提示