退火温度对液-固铸轧1070A/7075复合板组织与性能的影响  

Effect of Annealing Temperature on Microstructure and Properties of Liquid-Solid Cast-Rolled 1070A/7075 Composite Plate

作　　者：田双永 李玉涛 徐振 张丁丁 阎荟宇 TIAN Shuangyong;LI Yutao;XU Zhen;ZHANG Dingding;YAN Huiyu(School of Material and Metallurgy,University of Science and Technology Liaoning,Anshan 114051;Dalian DV Valve Co.,Ltd,Dalian 116037,China)

机构地区：[1]辽宁科技大学材料与冶金学院,辽宁鞍山114051 [2]大连大高阀门股份有限公司,辽宁大连116037

出　　处：《铝加工》2024年第3期23-28,共6页Aluminium Fabrication

基　　金：国家自然科学基金(52104377)。

摘　　要：通过金相显微镜(OM)、扫描电镜(SEM)、能谱仪(EDS)等检测设备以及拉伸和剪切等试验方法,研究了退火温度对液-固铸轧1070A/7075复合板材组织与性能的影响。结果表明:随着退火温度的不断提高,复合板材界面7075固态基板一侧开始出现连续的带状结构组织,抗拉强度与屈服强度不断下降,延伸率不断增加,剪切强度不断增大。当退火温度为400℃时,元素扩散距离与剪切强度均达到最大值,分别为37μm与114.3 MPa。The effect of annealing temperature on the microstructure and properties of liquid-solid cast-rolling 1070A/7075 compos-ite sheet was studied by means of metallographic microscope(OM),scanning electron microscope(SEM),energy dispersive spectrome-ter(EDS),tensile and shear tests.The results show that with the increasing of annealing temperature,continuous ribbon structure be-gins to appear on one side of the 7075 solid substrate,the tensile strength and yield strength decrease,the elongation increases,and the shear strength increases.When the annealing temperature is 400℃,the diffusion distance and shear strength of elements reach the maximum values,which are 37μm and 114.3 MPa,respectively.

关 键 词：退火 液-固铸轧 1070A/7075复合板材 剪切强度 

分 类 号：TG146.21[一般工业技术—材料科学与工程]