航空科学技术2016，Vol.27Issue(9)：56-61,6.
TC18钛合金变形行为试验研究及其流动应力模型的建立
Experimental Study on Deformation Behavior and Flow Stress Model of TC18 Titanium Alloy
李辉 1杨健 1秦锋英1
作者信息
- 1. 中航工业第一飞机设计研究院，陕西 西安 710089
- 折叠
摘要
Abstract
Through the selection of TC18 titanium alloy isothermal compression under the deformation temperature rate from 993~1203K, the strain rate from 0.01~5s-1 and deformation behavior of deformation degree of 55% under different deformation temperature and strain rate. According to the results, flow stress of TC18 titanium alloy increases with strain increasing during the initial stage of deformation, and when the strain exceeds a certain value, the flow stress begins to decline and tends towards stability. In addition, under a certain strain rate, the flow stress decreases when deformation temperature rises, and under a certain deformation temperature, the flow stress increases when strain rate increases. Using multiple repression analysis, this research establishes the model of flow stress of TC18 titanium alloy during high-temperature deformation. Compared with the test results, so this model effective describes the flow behavior of TC18 titanium alloy during high-temperature deformation.关键词
TC18钛合金/高温变形行为/流动应力模型/工艺参数Key words
TC18 titanium alloy/high temperature deformation behavior/flow stress model/process parameters分类
矿业与冶金引用本文复制引用
李辉,杨健,秦锋英..TC18钛合金变形行为试验研究及其流动应力模型的建立[J].航空科学技术,2016,27(9):56-61,6.
