摘要
To study the influence of texture on Hall-Petch slope,the Hall-Petch relationships of two hot-extruded AZ31 alloys(A117 and A189)were determined by the measurement of yield strength at room temperature.To determine the real texture difference,the texture changes were facilitated by the variation of extrusion ratio and demonstrated by the actual grain orientation distributions.The A117 alloys exhibited higher Hall-Petch slope in comparison of A187 in the condition of tension and compression,because A117 alloys had lower volume fraction of grains in the range of basal pole 75°-90°.The Hall-Petch slope differences for both alloys were analyzed and discussed by boundary obstacle against deformation propagation in grains with various orientation.Due to the higher volume fraction of grains in the range of basal pole 75°-90°in A189,the effect of hindering dislocation slip or twinning propagation by grains boundary was weaker than of A117.
作者
王岭
ZHAO Yiquan
WANG Yanmeng
SUN Chao
CHEN Hongmei
ZHANG Jing
ZHAO Mei
LIU Ying
WANG Yinong
WANG Ling;ZHAO Yiquan;WANG Yanmeng;SUN Chao;CHEN Hongmei;ZHANG Jing;ZHAO Mei;LIU Ying;WANG Yinong(Liaoning Key Laboratory of Chemical Additive Synthesis and Separation,Yingkou Institute of Technology,Yingkou,115014,China;CATARC Automotive Test Center(Tianjin)Co.,Ltd,Tianjin,300399,China;School of Electrical Engineering,Dalian University of Technology,Dalian,116024,China;Provincial Key Lab of Advanced Welding Technology,Jiangsu University of Science and Technology,Zhenjiang,212003,China;School of Metallurgy and Materials Engineering,Jiangsu University of Science and Technology,Zhangjiagang,215600,China;School of Materials Science and Engineering,Dalian University of Technology,Dalian,116024,China)
基金
Funded by the National Natural Science Foundation of China(No.51271046)
the Liaoning Science and Technology Joint Fund(Nos.2020-YKLH-26 and 2021-YKLH-19)
the Liaoning Science and Technology Projects(No.20180550724)
the Foundation of Liaoning Key Laboratory of Chemical Additive Synthesis and Separation(No.ZJNK2109)
the Doctoral Business and Innovation Launching Plan of Ying Kou City(No.QB-2019-10)
the HighLevel Talent Research Startup Foundation of Yingkou Institute of Technology(Nos.YJRC202008 and YJRC202009)。
