铝合金环件淬火热处理数值模拟研究  

Numerical simulation of quenching heat treatment for aluminum alloy ring

作　　者：谢凡 杜学斌[1] 马辉[1] 郭居奇[1] 贾祥 XIE Fan;DU Xue-bin;MA Hui;GUO Ju-qi;JIA Xiang(China National Heavy Machinery Research Institute Co.,Ltd.,Xi’an 710018,China)

机构地区：[1]中国重型机械研究院股份公司,陕西西安710018

出　　处：《重型机械》2024年第1期54-58,共5页Heavy Machinery

摘　　要：介绍了热应力场作用下铝合金环件残余应力的产生机理,通过有限元专业仿真软件Abaqus建立2219型铝合金环件有限元数值模型,分析得到了2219型铝合金环件在淬火过程中的温度场和残余应力分布规律。有限元模拟结果表明:环件外表面边缘交线处温降速率最大,芯部温降速率最小,环件表面温降速率介于边缘交线和芯部之间;环件内外表面和心部应力在淬火过程中出现陡峭增大后减小,减小至拐点后又增大并趋于平稳。同时环件芯部与内外表面应力大小基本一致,均大于环件上下表面应力。This article introduces the mechanism of residual stress generation in aluminum alloy rings under the action of thermal stress field,and establishes a finite element numerical model of 2219 aluminum alloy rings using the professional simulation software Abaqus,The distribution of temperature field and residual stress in the quenching process of 2219 aluminum alloy ring is analyzed.The results of finite element simulation show that:the maximum temperature drop rate occurs at the intersection of the outer surface edges of the ring,the temperature drop rate of the core is the smallest,and the temperature drop rate of the ring surface is between the edge intersection line and the core.The stress on the inner and outer surfaces and core of the ring increases sharply during the quenching process and then decreases,and increases again and tends to stabilize after decreases reaching the inflection point.At the same time,the stress on the core and inner and outer surfaces of the ring is basically the same,both of which are greater than that of the upper and lower surfaces of the ring.

关 键 词：铝合金环件 淬火 残余应力 ABAQUS软件 

分 类 号：TG156.34[金属学及工艺—热处理]