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| TC11钛合金的最大m值超塑性变形研究 | |
| 引用本文： | 赵晓宾,王高潮,曹春晓,李臻熙,杨刚,范定兵.TC11钛合金的最大m值超塑性变形研究[J].航空材料学报,2008,28(2):5-8. |
| 作者姓名： | 赵晓宾 王高潮 曹春晓 李臻熙 杨刚 范定兵 |
| 作者单位： | 1. 南昌航空大学,材料学院,南昌,330063 2. 南昌航空大学,材料学院,南昌,330063;北京航空材料研究院,北京,100095 3. 北京航空材料研究院,北京,100095 |
| 摘 要： | 介绍最大m值超塑性变形的试验方法和计算机控制系统,分析TC11钛合金采用该方法的超塑性变形特点。试验结果表明,经过细化处理的TC11钛合金,在900℃时恒应变速率试验的最大延伸率为1260%,采用最大m值变形方式可以获得异常高的超塑性,延伸率为2300%。TC11超塑性变形以晶界滑移为主,并伴随晶内位错滑移,最大m值法超塑性变形能够使动态再结晶充分发生,是提高钛合金塑性的有效方法。 |
| 关 键 词： | 最大m值超塑性变形 应变速率敏感指数(m值) 计算机控制系统 钛合金 TC11 |
| 文章编号： | 1005-5053(2008)02-0005-04 |
| 修稿时间： | 2007年3月19日 |
Maximum m Superplasticity Deformation for TC11 Titanium Alloy |
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| ZHAO Xiao-bin,WANG Gao-chao,CAO Chun-xiao,LI Zhen-xi,YANG Gang,FAN Ding-bing.Maximum m Superplasticity Deformation for TC11 Titanium Alloy[J].Journal of Aeronautical Materials,2008,28(2):5-8. | |
| Authors: | ZHAO Xiao-bin WANG Gao-chao CAO Chun-xiao LI Zhen-xi YANG Gang FAN Ding-bing |
| Abstract: | The emphasis was placed on the experiment method and the computer control system of maximum m superplasticity deformation(MaxmSPD).The superplastic deformation by this method for TC11 titanium alloy was analysed.The experiment results show that fine grain treatmemt TC11 titanium alloy,controlled by MaxmSPD,produces marked superplastic behaviour,in comparison with those constant strain rate methods.For example,at 900 oC,the former elongation is 2300%,while the latter is only 1260%.The superplastic deformatiom of TC11 titanium alloy gives first place to grain boundaries slip,accompanied with grain intra dislocation slip.Maximum m superplasticity deformation can amply occur dynamic recrystallization,it is also an efficacious way to improve deformatiom of titanium alloy. |
| Keywords: | maximum m superplasticity deformation strain-rate sensitivity exponent(m value) computer control system titanium alloy TC11 |
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