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在以往TB6钛合金研究成果的基础上,自行开发出定m值法超塑性拉伸控制程序来研究TB6钛合金的超塑性能,该控制程序具有自行拉伸控制、实时数据采集、分析处理和绘制监控曲线等功能。对该程序进行充分调试后,将TB6钛合金试样放在最佳变形温度750℃的条件下,设置拉伸程序中的应变速率敏感指数m值分别为0.30,0.35,0.40和0.45进行高温拉伸试验,采集数据得到TB6钛合金伸长率A分别为285%,318%,337%和367%。通过分析试验结果,绘制了应变速率敏感指数m值与伸长率A的关系曲线,再经回归分析,得到TB6钛合金超塑性应变速率敏感指数m值与伸长率A的关系式。
Based on the research results of TB6 titanium alloy in the past, the superplastic tensile control program of m-value method was developed to study the superplasticity of TB6 titanium alloy. The control program has self-stretching control, real-time data acquisition, analysis and processing Draw monitoring curve and other functions. After the program was fully debugged, the strain rate sensitivity index (m) values of the TB6 titanium alloy specimens were set at 750 ℃ and 0.30, 0.35, 0.40 and 0.45 Tensile test, the data obtained TB6 titanium alloy elongation A were 285%, 318%, 337% and 367%. By analyzing the experimental results, the relationship curve between the strain rate sensitive index m and the elongation A was plotted, and then the relationship between the superplastic strain rate sensitivity index m and elongation A of TB6 titanium alloy was obtained by regression analysis.