摘要
利用扫描电镜、电子背散射衍射技术以及室温单向拉伸,研究了100℃挤压时,挤压速度对Zn-2Al-0.5Cu-0.05Mg合金微观组织与力学性能的影响。结果表明,在0.5 mm/s和0.2 mm/s两种挤压速度下,锌合金基体发生了完全再结晶,基体η相平均晶粒尺寸在0.4~0.6μm之间。富Al相α相呈带状分布在η相上。随着挤压速度降低,基面织构转化为非基面织构。合金的屈服强度和抗拉强度保持在350 MPa和410 MPa左右,变化不明显;延伸率由35%增加至46%,有很大提高。
The effect of extrusion speed on the microstructure and mechanical properties of Zn-2Al-0.5Cu-0.05Mg alloy during extrusion at 100℃was investigated by scanning electron microscopy,electron backscatter diffraction and room temperature uniaxial tension.The results showed that the zinc alloy matrix recrystallized completely at the extrusion speed of 0.5 mm/s and 0.2 mm/s,and the average grain size ofηphase was between 0.4μm and 0.6μm.The Al-richαphase was distributed in bands on theηphase.As the extrusion speed decreased,the basal texture transformed into non-basal texture.The yield strength and tensile strength of the alloy remained around 350 MPa and 410 MPa,and the change was not obvious.The elongation improved from 35%to 46%.
作者
刘红雨
任玉平
李洪晓
蒋敏
秦高梧
LIU Hongyu;REN Yuping;LI Hongxiao;JIANG Min;QIN Gaowu(Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education);School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China)
出处
《中国体视学与图像分析》
2022年第3期248-252,共5页
Chinese Journal of Stereology and Image Analysis
基金
国家自然科学基金项目(No.51871047)
