TiCN 添加对 AZ31 合金微观结构和力学性能的影响。

Influence of TiCN addition on the microstructures and mechanical properties of the AZ31 alloy.

作者信息

Li Qi-Feng, Qiu Wei, Xie Wen, Huang Wei-Ying, Zhou Li-Bo, Ren Yan-Jie, Chen Jian, Yao Mao-Hai, Xiong Ai-Hu, Chen Wei

机构信息

School of Energy and Power Engineering, Changsha University of Science & Technology Changsha Hunan 410114 China

Key Laboratory of Energy Efficiency and Clean Utilization, The Education Department of Hunan Province, Changsha University of Science & Technology Changsha Hunan 410114 China.

出版信息

RSC Adv. 2022 Oct 26;12(47):30650-30657. doi: 10.1039/d2ra05280f. eCollection 2022 Oct 24.

DOI:10.1039/d2ra05280f

PMID:36337939

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9597589/

Abstract

The microstructure and mechanical properties of extruded AZ31 + TiCN ( = 0, 0.4, 0.8, 1.2 wt%) were investigated, and the strengthening mechanism was discussed. X-ray diffraction and energy dispersive spectroscopy (EDS) confirmed that the AlC and AlMgC duplex phase particles were generated by TiCN and Al particles, which act as the nucleation precursors of Mg grains during solidification. The grain size decreased and then increased with increasing TiCN addition. The yield strength (YS) and ultimate tensile strength (UTS) increased with increasing TiCN addition reaching a maximum (217.5 MPa) at 0.4 wt%, and in contrast, the elongation index (EI) continuously decreased with increasing TiCN addition.

摘要

研究了挤压态AZ31 + TiCN（TiCN含量分别为0、0.4、0.8、1.2 wt%）的微观结构和力学性能，并探讨了其强化机制。X射线衍射和能谱分析（EDS）证实，TiCN与Al颗粒反应生成了AlC和AlMgC双相颗粒，这些颗粒在凝固过程中作为Mg晶粒的形核前驱体。随着TiCN添加量的增加，晶粒尺寸先减小后增大。屈服强度（YS）和抗拉强度（UTS）随着TiCN添加量的增加而提高，在TiCN含量为0.4 wt%时达到最大值（217.5 MPa），相反，伸长率指数（EI）随着TiCN添加量的增加而持续下降。