航空材料学报Issue(1)：18-25,8.DOI:10.11868/j.issn.1005-5053.2016.1.004
喷射成形7055铝合金热变形行为模拟
Hot Deformation Simulation of Spray Formed 7055 Aluminum Alloy
祝令状 1李忠华 1张桢 2周小军2
作者信息
- 1. 江苏大学 材料科学与工程学院，江苏 镇江 212000
- 2. 江苏豪然喷射成形合金有限公司，江苏 镇江 212009
- 折叠
摘要
Abstract
The hot deformation behavior of spray formed 7055 aluminum alloy was investigated in this paper.Hot compression deforma-tion was performed on Gleeble-3500 thermal-mechanical simulator at strain rate of 0.001 -5s -1 and deformation temperature of 573-723K.The result shows that the flow stress of spray formed 7055 aluminum alloy is increased with the increasing of strain rates,while decreased with the increasing of the deforming temperature.The maximum temperature rising induced by deformation heat is 25K dur-ing the test at strain rate of 5s -1 ,and the corrected flow stress is 20MPa higher than measured value.A flow stress constitutive equa-tion is constituted based on Arrhenius hyperbolic sine function containing the Z parameter,and the hot deformation activation energy is 146.91 kJ·mol -1 .The average absolute relative error (Er )is introduced to evaluate the performance of the developed constitutive e-quation.The value of Er is 2.89% ,which proves the developed constitutive equation can accurately predict the flow stress of the spray formed 7055 aluminum alloy.关键词
喷射成形/7055 铝合金/热变形/温升/本构方程Key words
spray forming/7055 aluminum alloy/hot deformation/temperature rising/constitutive equation分类
矿业与冶金引用本文复制引用
祝令状,李忠华,张桢,周小军..喷射成形7055铝合金热变形行为模拟[J].航空材料学报,2016,(1):18-25,8.
