摘要
采用金相显微镜、透射电镜、硬度测试、拉伸试验等研究了0~75%不同变形量冷轧的Al-1.2Si-0.5Mg合金的微观组织与力学性能。结果表明:随着冷轧变形量的增加,Al-1.2Si-0.5Mg合金晶粒沿轧制方向被逐渐拉长,析出相尺寸逐渐减小,数量逐渐增加。冷轧变形量达到75%时,合金晶粒被完全破碎。随着冷轧变形量的增加,Al-1.2Si-0.5Mg合金的硬度、强度逐渐提高,塑性逐渐下降。75%冷轧的Al-1.2Si-0.5Mg合金的硬度和强度均达到峰值,其硬度、抗拉强度和屈服强度分别为118.3 HV、336.4 MPa和264.5 MPa,其伸长率为17.1%。
The microstructure and mechanical properties of Al-1.2Si-0.5Mg cold rolled alloy with 0-75%different deformations were investigated by metallography microscope,transmission electron microscope,hardness test and tensile test.The results show that with the increase of cold rolling deformation amount,the Al-1.2Si-0.5Mg alloy grains are gradually elongated along the rolling direction,the size of precipitated phase gradually decreases,and the number of precipitated phase gradually increases.When the cold rolling deformation amount reaches 75%,the alloy grain is completely broken.With the increase of cold rolling deformation amount,the hardness and strength of Al-1.2Si-0.5Mg alloy gradually increase,while the plasticity gradually decreases.The hardness and strength of the 75%cold rolled Al-1.2Si-0.5Mg alloy reach the peak,the hardness,tensile strength and yield strength are 118.3 HV,336.4 MPa and 264.5 MPa respectively,and the elongation of the alloy is 17.1%.
作者
徐慧敏
于水成
XU Huimin;YU Shuicheng(School of Architecture and Planning,Jilin University of Architecture and Technology,Changchun 130000,China;College of Material Science and Engineering,Changchun University of Technology,Changchun 130000,China)
出处
《热加工工艺》
北大核心
2023年第13期96-99,共4页
Hot Working Technology
基金
吉林省科技发展计划项目(20190201198JC)。
