添加稀土元素Y对Ti_2AlNb基合金高温变形行为及热加工工艺的影响
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摘要
利用Gleeble-3500热模拟试验机对Ti-22Al-24Nb合金和Ti-22Al-24Nb-0. 5Y合金试样进行等温恒应变速率压缩试验,研究了在应变速率0. 01～10 s~(-1)、变形温度900～1080℃条件下,添加稀土Y对Ti-22Al-24Nb合金高温流动应力及热变形激活能的影响规律,采用Prasad加工图分析了添加稀土元素Y对Ti-22Al-24Nb合金热加工工艺的影响。结果表明:添加稀土元素Y后,提高了Ti-22Al-24Nb合金的高温变形抗力和变形激活能,含稀土元素Y的Ti-22Al-24Nb-0. 5Y合金的峰值流动应力在各变形条件下均高于未添加稀土的Ti-22Al-24Nb合金,且随应变量的增加,其激活能升高,应变量为0. 6时,Ti-22Al-24Nb-0. 5Y合金激活能达到了668. 464 k J·mol~(-1),当应变量为0. 8时,随应变量的增加,合金变形激活能变化不大;添加稀土元素Y对Ti-22Al-24Nb合金加工图的失稳区域及功率耗散效率影响显著,添加稀土元素Y后,合金在加工图中的失稳区域扩大,提高了合金热变形过程中的功率耗散效率,减小了Ti-22Al-24Nb合金热加工工艺参数范围。
The isothermal constant strain rate compression tests of Ti-22 Al-24 Nb alloy and Ti-22 Al-24 Nb-0. 5 Y alloy samples were carried out by Gleeble-3500 thermal simulation tester. The effect of rare earth element Y on high temperature flow stress and thermal deformation activation energy of Ti-22 Al-24 Nb alloy at strain rates of 0. 01-10 s~(-1) and deformation temperature of 900-1080 ℃ was studied,and the effect of adding rare earth element Y on hot working process of Ti-22 Al-24 Nb alloy was analyzed by using Prasad processing map. The results show that the addition of rare earth element Y can improve the high temperature deformation resistance and deformation activation energy of the Ti-22 Al-24 Nb alloy. The peak flow stress of the rare Ti-22 Al-24 Nb-0. 5 Y alloy is higher than that of the rare earth element free Ti-22 Al-24 Nb alloy under all deformation conditions,and with the increase of the strain,the activation energy of the rare earth free Ti-22 Al-24 Nb0. 5 Y alloy increases,when the strain is 0. 6,the activation energy reaches 668. 464 kJ ·mol~(-1). When the strain is 0. 8,the deformation activation energy of Ti-22 Al-24 Nb-0. 5 Y alloy changes little with the increase of strain. The addition of rare earth element Y has significant effects on the instability region and power dissipation efficiency of the Ti-22 Al-24 Nb alloy hot processing map. After the rare earth Y is added,the instability region of the alloy in the processing map is enlarged,the power dissipation efficiency in the heat deformation process of the alloy is improved,and the hot processing parameter range of Ti-22 Al-24 Nb alloy is reduced.
The isothermal constant strain rate compression tests of Ti-22 Al-24 Nb alloy and Ti-22 Al-24 Nb-0. 5 Y alloy samples were carried out by Gleeble-3500 thermal simulation tester. The effect of rare earth element Y on high temperature flow stress and thermal deformation activation energy of Ti-22 Al-24 Nb alloy at strain rates of 0. 01-10 s~(-1) and deformation temperature of 900-1080 ℃ was studied,and the effect of adding rare earth element Y on hot working process of Ti-22 Al-24 Nb alloy was analyzed by using Prasad processing map. The results show that the addition of rare earth element Y can improve the high temperature deformation resistance and deformation activation energy of the Ti-22 Al-24 Nb alloy. The peak flow stress of the rare Ti-22 Al-24 Nb-0. 5 Y alloy is higher than that of the rare earth element free Ti-22 Al-24 Nb alloy under all deformation conditions,and with the increase of the strain,the activation energy of the rare earth free Ti-22 Al-24 Nb0. 5 Y alloy increases,when the strain is 0. 6,the activation energy reaches 668. 464 kJ ·mol~(-1). When the strain is 0. 8,the deformation activation energy of Ti-22 Al-24 Nb-0. 5 Y alloy changes little with the increase of strain. The addition of rare earth element Y has significant effects on the instability region and power dissipation efficiency of the Ti-22 Al-24 Nb alloy hot processing map. After the rare earth Y is added,the instability region of the alloy in the processing map is enlarged,the power dissipation efficiency in the heat deformation process of the alloy is improved,and the hot processing parameter range of Ti-22 Al-24 Nb alloy is reduced.
引文
[1]张建伟,李世琼,梁晓波,等.Ti3Al和Ti2Al Nb基合金的研究与应用[J].中国有色金属学报,2010,20(s1):336-341.ZHANG Jianwei,LI Shiqiong,LIANG Xiaobo,et al.Research and application of Ti3Al and Ti2Al Nb based alloys[J].Chinese Journal of Nonferrous Metals,2010,20(s1):336-341.
[2]陈玉勇,孔凡涛.Ti Al基合金新材料研究及精密成[J].金属学报,2002,38(11):1141-1148.CHEN Yuyong,KONG Fantao.Research on Ti Al based alloys materials and precision forming[J].Acta Matallurgica Sinica,2002,38(11):1141-1148.
[3]LI S Q,CHENG Y J,LIANG X B,et al.Recent work on alloy and process development of Ti2Al Nb based alloys[C]∥The 5th Pacific Rim International Conference on Advanced Materials and Processing.Beijing,2005:795-800.
[4]EMURA S,TSUZAKI K,TSUCHIYA K.Improvement of room temperature ductility for Mo and Fe modified Ti2Al Nb alloy[J].Materials Science and Engineering A,2010,528(1):355-362.
[5]KONG F T,CHEN Y Y,LI B H.Influence of yttrium on the high temperature deformability of Ti Al alloys[J].Materials Science and Engineering A,2009,499(1-2):53-57.
[6]LIU H Y,TANG H P,HE W W,et al.Properties evolution of a powder metallurgical titanium alloy with yttrium addition[J].Rare Metal Materials and Engineering,2011,40(s3):298-300.
[7]XU J W,LIU A L,WANG S H,et al.Effect of Y addition on isothermal oxidation behavior of Ti50Ni50 shape memory alloy at700℃[J].Rare Metal Materials and Engineering,2016,45(9):2246-2252.
[8]乔景振,田保红,张毅,等.Y对退火态耐蚀铜合金冲蚀性能影响[J].稀有金属,2018,42(12):1247-1254.QIAO Jingzhen,TIAN Baohong,ZHANG Yi,et al.Erosion behavior of annealed corrosion resistance of copper alloy with rare earth[J].Chinese Journal of Rare Metals,2018,42(12):1247-1254.
[9]PRASAD Y V R K,GEGEL H L,DORAIVELU S M,et al.Modeling of dynamic material behavior in hot deformation:Forging of Ti-6242[J].Metallurgical Transactions A,1984,15(10):1883-1892.
[10]王瑜,林栋梁,刘俊亮,等.Ti-47Al-2Mn-2Nb-0.8TiB2合金韧脆转变温度及其应变速率敏感性[J].金属学报,1998,13(3):255-262.WANG Yu,LIN Dongliang,LIU Junliang,et al.Brittle-to-ductile transition temperature and its strain rate sensitivity in Ti-47Al-2Mn-2Nb-0.8TiB2[J].Acta Metallurgica Sinica,1998,13(3):255-262.
[11]刘咏,汤慧萍.粉末冶金钛基结构材料[M].长沙:中南大学出版社,2012.LIU Yong,TANG Huiping.Powder metallurgical titanium base structural materials[M].Changsha:Central South University Press,2012.
[12]王小娜,张辉.5005铝合金热压缩变形行为[J].锻压技术,2017,42(2):119-123.WANG Xiaona,ZHANG Hui.Hot compression behavior of aluminum alloy 5005[J].Forging&Stamping Technology,2017,42(2):119-123.
[13]胡卓超,张德芬,黄涛,等.3104铝合金的流变应力行为与动态再结晶[J].机械工程材料,2005,29(2):6-9.HU Zhuochao,ZHANG Defen,HUANG Tao,et al.Flow stress behavior and dynamic recrystallization of 3104 aluminum alloy[J].Material of Mechanical Engineering,2005,29(2):6-9.
[14]KREUSS G.Deformation processing and structure[M].Ohio:American Sosiety for Metal,1984.
[15]SELLARS C M,MCTEGART W J.On the mechanism of hot deformation[J].Acta Metallurgica,1966,14(9):1136-1138.
[16]ZENER C,HOLLOMON J H.Effect of strain rate upon plastic flow of steel[J].Journal of Applied Physics,1944,15(1):22-32.
[17]张毅,许倩倩,李瑞卿,等.铈对Cu-Cr-Zr合金热变形行为的影响[J].中国稀土学报,2013,31(6):710-715.ZHANG Yi,XU Qianqian,LI Ruiqin,et al.Effect of Cerium addition on hot deformation behavior of Cu-Cr-Zr alloy[J].Journal of the Chinese Society of Rare Earths,2013,31(6):710-715.
[18]曾卫东,周义刚,周军,等.加工图理论研究进展[J].稀有金属材料与工程,2006,35(5):673-677.ZENG Weidong,ZHOU Yigang,ZHOU Jun,et al.Recent development of processing map theory[J].Rare Metal Materials and Engineering,2006,35(5):673-677.
[19]林崇智,李军,杨柳,等.不同原始组织TA17钛合金的热变形行为研究[J].塑性工程学报,2018,25(2):284-289.LIN Chongzhi,LI Jun,YANG Liu,et al.Investigation on hot deformation behavior of TA17 titanium alloy with different original microstructures[J].Journal of Plasticity Engineering,2018,25(2):284-289.
[20]王坚,周芸,马党参,等.M35高速钢的热变形行为研究[J].塑性工程学报,2016,23(6):143-150.WANG Jian,ZHOU Yun,MA Dangshen,et al.Hot deformation behaviors of M35 high speed steel[J].Journal of Plasticity Engineering,2016,23(6):143-150.
[2]陈玉勇,孔凡涛.Ti Al基合金新材料研究及精密成[J].金属学报,2002,38(11):1141-1148.CHEN Yuyong,KONG Fantao.Research on Ti Al based alloys materials and precision forming[J].Acta Matallurgica Sinica,2002,38(11):1141-1148.
[3]LI S Q,CHENG Y J,LIANG X B,et al.Recent work on alloy and process development of Ti2Al Nb based alloys[C]∥The 5th Pacific Rim International Conference on Advanced Materials and Processing.Beijing,2005:795-800.
[4]EMURA S,TSUZAKI K,TSUCHIYA K.Improvement of room temperature ductility for Mo and Fe modified Ti2Al Nb alloy[J].Materials Science and Engineering A,2010,528(1):355-362.
[5]KONG F T,CHEN Y Y,LI B H.Influence of yttrium on the high temperature deformability of Ti Al alloys[J].Materials Science and Engineering A,2009,499(1-2):53-57.
[6]LIU H Y,TANG H P,HE W W,et al.Properties evolution of a powder metallurgical titanium alloy with yttrium addition[J].Rare Metal Materials and Engineering,2011,40(s3):298-300.
[7]XU J W,LIU A L,WANG S H,et al.Effect of Y addition on isothermal oxidation behavior of Ti50Ni50 shape memory alloy at700℃[J].Rare Metal Materials and Engineering,2016,45(9):2246-2252.
[8]乔景振,田保红,张毅,等.Y对退火态耐蚀铜合金冲蚀性能影响[J].稀有金属,2018,42(12):1247-1254.QIAO Jingzhen,TIAN Baohong,ZHANG Yi,et al.Erosion behavior of annealed corrosion resistance of copper alloy with rare earth[J].Chinese Journal of Rare Metals,2018,42(12):1247-1254.
[9]PRASAD Y V R K,GEGEL H L,DORAIVELU S M,et al.Modeling of dynamic material behavior in hot deformation:Forging of Ti-6242[J].Metallurgical Transactions A,1984,15(10):1883-1892.
[10]王瑜,林栋梁,刘俊亮,等.Ti-47Al-2Mn-2Nb-0.8TiB2合金韧脆转变温度及其应变速率敏感性[J].金属学报,1998,13(3):255-262.WANG Yu,LIN Dongliang,LIU Junliang,et al.Brittle-to-ductile transition temperature and its strain rate sensitivity in Ti-47Al-2Mn-2Nb-0.8TiB2[J].Acta Metallurgica Sinica,1998,13(3):255-262.
[11]刘咏,汤慧萍.粉末冶金钛基结构材料[M].长沙:中南大学出版社,2012.LIU Yong,TANG Huiping.Powder metallurgical titanium base structural materials[M].Changsha:Central South University Press,2012.
[12]王小娜,张辉.5005铝合金热压缩变形行为[J].锻压技术,2017,42(2):119-123.WANG Xiaona,ZHANG Hui.Hot compression behavior of aluminum alloy 5005[J].Forging&Stamping Technology,2017,42(2):119-123.
[13]胡卓超,张德芬,黄涛,等.3104铝合金的流变应力行为与动态再结晶[J].机械工程材料,2005,29(2):6-9.HU Zhuochao,ZHANG Defen,HUANG Tao,et al.Flow stress behavior and dynamic recrystallization of 3104 aluminum alloy[J].Material of Mechanical Engineering,2005,29(2):6-9.
[14]KREUSS G.Deformation processing and structure[M].Ohio:American Sosiety for Metal,1984.
[15]SELLARS C M,MCTEGART W J.On the mechanism of hot deformation[J].Acta Metallurgica,1966,14(9):1136-1138.
[16]ZENER C,HOLLOMON J H.Effect of strain rate upon plastic flow of steel[J].Journal of Applied Physics,1944,15(1):22-32.
[17]张毅,许倩倩,李瑞卿,等.铈对Cu-Cr-Zr合金热变形行为的影响[J].中国稀土学报,2013,31(6):710-715.ZHANG Yi,XU Qianqian,LI Ruiqin,et al.Effect of Cerium addition on hot deformation behavior of Cu-Cr-Zr alloy[J].Journal of the Chinese Society of Rare Earths,2013,31(6):710-715.
[18]曾卫东,周义刚,周军,等.加工图理论研究进展[J].稀有金属材料与工程,2006,35(5):673-677.ZENG Weidong,ZHOU Yigang,ZHOU Jun,et al.Recent development of processing map theory[J].Rare Metal Materials and Engineering,2006,35(5):673-677.
[19]林崇智,李军,杨柳,等.不同原始组织TA17钛合金的热变形行为研究[J].塑性工程学报,2018,25(2):284-289.LIN Chongzhi,LI Jun,YANG Liu,et al.Investigation on hot deformation behavior of TA17 titanium alloy with different original microstructures[J].Journal of Plasticity Engineering,2018,25(2):284-289.
[20]王坚,周芸,马党参,等.M35高速钢的热变形行为研究[J].塑性工程学报,2016,23(6):143-150.WANG Jian,ZHOU Yun,MA Dangshen,et al.Hot deformation behaviors of M35 high speed steel[J].Journal of Plasticity Engineering,2016,23(6):143-150.