TC11钛合金在900℃的超塑性变形行为
Superplastic Deformation Behavior of TC11 Titanium Alloy at 900℃
摘 要
对TC11钛合金在900 ℃、0.000 1～0.4 s-1应变速率条件下的拉伸变形行为进行了研究,并用光学显微镜和透射电镜对拉伸试样的显微组织进行了观察和分析.结果表明:当应变速率不大于0.04 s-1时,TC11钛合金呈现出超塑性,且应变速率越低,超塑性越好,当应变速率为0000 1 s-1时,伸长率达到1 215%;拉伸试样横截面上的α相基本上是等轴状的,而纵截面上的α相随应变速率的降低由长条状变成等轴状,变形过程中存在动态再结晶和扩散蠕变;超塑性变形过程中α/β相界面存在滑移,且α相和β相均发生变形;变形模型为等应变速率模型和等应力模型的混合型.
拉伸变形
超塑性
应变速率
TC11 titanium alloy
tensile deformation
superplasticity
strain rate
Abstract
The tensile deformation behavior of TC11 titanium alloy has been investigated in the strain rate range of 0.000 1-0.4 s-1 at 900 ℃,and microstructure of the deformed alloy was observed and analyzed by optical microscope and transmission electron microscope.The results showed that the alloy exhibited superplasticity as the strain rate was not larger than 0.04 s-1,and the superplasticity increased with the decrease of strain rate.When the strain rate was 0.000 1 s-1,the elongation could reach as higher as 1 215%.The α phase in the transversal section of the alloy was equiaxed,but the α phase in the longitudinal section turned from strip shape to equiaxed shape with the decrease of strain rate.During the superplastic deformation process,there were dynamic recrystallization and diffusional creep.The boundary slip occured at the α/β phases boundaries,and both the α and β phases occured deformation.The deformation mode was the mixed type of isostress and isostrain rate modes.
中图分类号 TG146.2
所属栏目 试验研究
基金项目 江西省自然科学基金资助项目(2007GQC1575);江西省教育厅科技资助项目(GJJ08203);江西省材料科学与工程研究中心预研基金资助项目(ZX200601002)
收稿日期 2008/2/27
修改稿日期 2008/12/21
网络出版日期
作者单位点击查看
备注李鑫(1975-),男,江苏徐州人,博士研究生.
引用该论文: LI Xin,LU Shi-qiang,WANG Ke-lu,DING Lin-hai. Superplastic Deformation Behavior of TC11 Titanium Alloy at 900℃[J]. Materials for mechancial engineering, 2009, 33(2): 21～24
李鑫,鲁世强,王克鲁,丁林海. TC11钛合金在900℃的超塑性变形行为[J]. 机械工程材料, 2009, 33(2): 21～24
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参考文献
【1】Yoshimura H,Nakahigashi J.Ultra-fine-grain refinement and superplasticity of titanium alloys obtained through protium treatment[J].International Journal of Hydrogen Energy,2002,27:769-774.
【2】Sergueeva A V,Stolyarov V V,Valiev R Z.Superplastic behavior of ultrafine-grained Ti-6Al-4V alloys[J].Materials Science and Engineering A,2002,323:318-325.
【3】Mallikarjun K,Suwas S,Bhargava S.Effect of prior processing on superplasticity of (α＋β) thermo-mechanically treated Ti-632Si alloy[J].Journal of Materials Processing Technology,2003,134:35-44.
【4】姚锦声,黄礼平,张立建,等.Ti-1023钛合金的超塑性[J].上海钢研,2000(1):3-7.
【5】熊爱明,张志清,李淼泉.TC6钛合金的超塑性变形研究[J].航空学报,2003,24(5):477-480.
【6】李鑫,鲁世强,王克鲁,等.应用Murty准则优化TC11钛合金高温变形参数[J].金属学报,2007,43(12):1268-1274.
【7】Li Xin,Lu Shiqiang,Wang Kelu,et al.Hot deformation mechanism and process optimization for Ti-alloy Ti-6.5Al-35Mo-1.5Zr-0.3Si during α＋β forging based on murty criterion[J].Rare Metal Materials and Engineering,2008,37(4):577-583.
【8】郭鸿镇,张维,赵张龙,等.TC21新型钛合金的超塑性拉伸行为及组织演变[J].稀有金属材料与工程,2005,34(12):1935-1939.
【9】Ashby M F,Verrall R A.Diffusion accommodated flow and superplasticity[J].Acta Metallurgica,1973,21(2):149-163.
【10】文九巴,杨蕴林,杨永顺,等.超塑性应用技术[M].北京:机械工业出版社,2005:16-25.
【11】赵文娟,丁桦,曹富荣,等.Ti-6Al-4V合金超塑性变形中的组织演变及变形机制[J].中国有色金属学报,2007,17(12):1973-1980.
【12】Kim J S,Kim J H,Lee Y T,et al.Microstructural analysis on boundary sliding and its accommodation mode during superplastic deformation of Ti-6Al-4V alloy[J].Material Science and Engineering A,1999,263:272-280.
【13】莱茵斯 C,皮特尔斯 M.钛与钛合金[M].陈振华,译.北京:化学工业出版社,2005:1-15.
【14】Kim J H,Semiatin S L,Lee C S.Constitutive analysis of the high-temperature deformation mechanisms of Ti-6Al-4V and Ti-6.85Al-1.6V alloys[J].Materials Science and Engineering A,2005,394:366-375.
【2】Sergueeva A V,Stolyarov V V,Valiev R Z.Superplastic behavior of ultrafine-grained Ti-6Al-4V alloys[J].Materials Science and Engineering A,2002,323:318-325.
【3】Mallikarjun K,Suwas S,Bhargava S.Effect of prior processing on superplasticity of (α＋β) thermo-mechanically treated Ti-632Si alloy[J].Journal of Materials Processing Technology,2003,134:35-44.
【4】姚锦声,黄礼平,张立建,等.Ti-1023钛合金的超塑性[J].上海钢研,2000(1):3-7.
【5】熊爱明,张志清,李淼泉.TC6钛合金的超塑性变形研究[J].航空学报,2003,24(5):477-480.
【6】李鑫,鲁世强,王克鲁,等.应用Murty准则优化TC11钛合金高温变形参数[J].金属学报,2007,43(12):1268-1274.
【7】Li Xin,Lu Shiqiang,Wang Kelu,et al.Hot deformation mechanism and process optimization for Ti-alloy Ti-6.5Al-35Mo-1.5Zr-0.3Si during α＋β forging based on murty criterion[J].Rare Metal Materials and Engineering,2008,37(4):577-583.
【8】郭鸿镇,张维,赵张龙,等.TC21新型钛合金的超塑性拉伸行为及组织演变[J].稀有金属材料与工程,2005,34(12):1935-1939.
【9】Ashby M F,Verrall R A.Diffusion accommodated flow and superplasticity[J].Acta Metallurgica,1973,21(2):149-163.
【10】文九巴,杨蕴林,杨永顺,等.超塑性应用技术[M].北京:机械工业出版社,2005:16-25.
【11】赵文娟,丁桦,曹富荣,等.Ti-6Al-4V合金超塑性变形中的组织演变及变形机制[J].中国有色金属学报,2007,17(12):1973-1980.
【12】Kim J S,Kim J H,Lee Y T,et al.Microstructural analysis on boundary sliding and its accommodation mode during superplastic deformation of Ti-6Al-4V alloy[J].Material Science and Engineering A,1999,263:272-280.
【13】莱茵斯 C,皮特尔斯 M.钛与钛合金[M].陈振华,译.北京:化学工业出版社,2005:1-15.
【14】Kim J H,Semiatin S L,Lee C S.Constitutive analysis of the high-temperature deformation mechanisms of Ti-6Al-4V and Ti-6.85Al-1.6V alloys[J].Materials Science and Engineering A,2005,394:366-375.
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