EBSD and Phase-Field Crystal Simulation Revealed the Inhibition of Al_(3)Ti on Crack Extention in TC4-2024Al Laminated Composites  

作　　者：Yihong Liu Zhuo Song Muxi Li Kangan Wang Zhiping Xiong Hua Hou Yuhong Zhao 

机构地区：[1]School of Materials Science and Engineering,Collaborative Innovation Center of Ministry of Education and Shanxi Province for High-Performance Al/Mg Alloy Materials,North University of China,Taiyuan 030051,China [2]National Key Laboratory of Science and Technology on Materials Under Shock and Impact,Beijing Institute of Technology,Beijing 100081,China [3]School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China [4]Beijing Advanced Innovation Center for Materials Genome Engineering,University of Science and Technology Beijing,Beijing 100083,China [5]Institute for Materials Intelligent Technology,Liaoning Academy of Materials,Shenyang 110004,China

出　　处：《Acta Metallurgica Sinica(English Letters)》2025年第2期259-275,共17页金属学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos.52375394,52074246,52275390,52205429,52201146);the National Defense Basic Scientific Research Program of China(JCKY2020408B002);the Key Research and Development Program of Shanxi Province(202102050201011,202202050201014).

摘　　要：In Ti-Al laminated composites,cracks nucleate preferentially at the Al_(3)Ti layer,but the inhibitory effect of Al_(3)Ti on crack extension is ignored.Interestingly,by combining experiment and phase-field crystal simulation,we found that the micrometer Al_(3)Ti particles in the diffusion layer play the role of crack deflection and passivation,which is attributed to the lattice distortion induced by Al_(3)Ti consumes the energy of the crack in extension.In addition,it is found that the growth process of Al_(3)Ti is divided into two stages:nucleation stage and growth stage.Compared with the growth stage,the Al_(3)Ti grains in the nucleation stage are finer in the growth layer.Finer grains show better crack deflection and avoid stress concentration.

关 键 词：Ti-Al laminated composites Phase-field crystal simulation Growth kinetics Bending properties Crack extension 

分 类 号：TG335.8[金属学及工艺—金属压力加工]