材料工程2025，Vol.53Issue(4)：91-97,7.DOI:10.11868/j.issn.1001-4381.2024.000542
冷拉变形和退火温度对Al-Si-Sc-Zr合金丝材组织及拉伸性能的影响
Influence of cold drawing deformation and annealing temperature on microstructure and tensile properties of Al-Si-Sc-Zr alloy wires
郑涛 1施瀚超 1陈冰清 1熊华平1
作者信息
- 1. 中国航发北京航空材料研究院,北京 100095
- 折叠
摘要
Abstract
The effect of different cold drawing deformations and annealing temperatures on the microstructure and tensile properties of Al-Si-Sc-Zr alloy wires is investigated by the mean of electron backscatter diffraction technique.The results show that the grains are elongated and refined along the drawing direction,accompanying with the fibrous structure and a typical<111>deformation texture with strain increasing.However,when the drawing strain increases from 0.61 to 0.76,the average grain size increases and the proportion of low-angle grain boundaries decreases due to the recrystallization behavior in the grains.Furthermore,the tensile strength and yield strength of the wire increase to 181.5 MPa and 166.5 MPa,respectively,due to the work hardening induced by the cold drawing process.When the cold-drawn wires are subjected to the annealing treatment at 350-450 ℃ for 2 h,the fibrous cold-drawn structure is transformed into fine equiaxed grains,and the typical cube texture { 100}<001>is formed.This annealing treatment can significantly eliminate the work hardening caused by the cold drawing.In this case,the yield strength decreases from 166.5 MPa to 84.0 MPa,meanwhile the elongation after fracture increases from 2.1％to 9.5％.The annealed structure is uniform and stable,which is favorable to subsequent cold drawing processes.关键词
Al-Si-Sc-Zr合金丝材/冷拉/退火温度/组织/织构/拉伸性能Key words
Al-Si-Sc-Zr alloy wire/cold drawing/annealing temperature/microstructure/texture/tensile property分类
矿业与冶金引用本文复制引用
郑涛,施瀚超,陈冰清,熊华平..冷拉变形和退火温度对Al-Si-Sc-Zr合金丝材组织及拉伸性能的影响[J].材料工程,2025,53(4):91-97,7.
