用示差扫描量热仪和拉伸实验研究了V、Cr和退火温度对Ti-50.8Ni(原子分数, %)超弹性合金相变和形变特性的影响. 350-550℃退火态Ti-50.8Ni合金冷却/加热时发生A R M 两阶段可逆相变(A-母相,R-R相,M-马氏体).随退火温度升高,合金的 R 和 M 相变温度θR和θM先升高后降低, M 相变热滞△θM持续降低, R 相变热滞△θR基本不变.加入0.5%V后,合金的相变类型和△θR、△θM基本不变,θR、θM降低;加入0.3%Cr后,相变类型和△θR基本不变, △θM增加, θR和θM大幅度降低.400℃退火态Ti-50.8Ni合金的超弹性应力和应变分别为473 Mpa和6.4%,加入0.3%Cr后,合金的超弹性应力增加到620 Mpa,超弹性应变减小到3.5%;加入0.5%V后,超弹性应力和应变分别减小到388 Mpa和4.9%.当退火温度由400℃升至500℃后,3种合金的超弹性应力均减小.
参考文献
| [1] | Humbeeck J V.Mater Sci Eng,1999; A273-275:134 |
| [2] | Vokoun D,Kafka V,Hu C T.Smart Mater Struct,2003;12:680 |
| [3] | Song G,Chaudhry V,Batur C.J Intell Mater Syst Struct,2003; 14:371 |
| [4] | Otsuka K,Wayman C M.Shape Memory Materials.Cambridge:Cambridge University Press,1998:220 |
| [5] | Zhao L C,Cai W,Zheng Y F.Shape Memory Effect and Superelasticity in Alloys.Beijing:National Defence Industry Press,2002:5(赵连城,蔡伟,郑玉峰.合金的形状记忆效应与超弹性.北京:国防工业出版社,2002:5) |
| [6] | Kim J I,Liu Y,Miyazaki S.Acta Mater,2004; 52:487 |
| [7] | Michutta J,Somsen C,Yawny A,Dlouhy A,Eggeler G.Acta Mater,2006; 54:3525 |
| [8] | He Z R.Acta Metall Sin,2007; 43:353(贺志荣.金属学报,2007;43:353) |
| [9] | He Z R,Zhang Y H,Wang Y S,Zhou J E.Acta Metall Sin,2004; 40:46(贺志荣,张永宏,王永善,周敬恩.金属学报,2004;40:46) |
| [10] | Saadat S,Salichs J,Noori M,Hou Z,Davoodi H,Suzuki Y,Masuda A.Smart Mater Struct,2002; 11:218 |
| [11] | He Z R,Zhou J E,Miyazaki S.Acta Metall Sin,2003; 39:617(贺志荣,周敬恩,宫崎修一.金属学报,2003;39:617) |
| [12] | Kim J I,Miyazaki S.Acta Mater,2005; 53:4545 |
| [13] | He Z R,Wang F,Zhou J E.Heat Treat Met,2006; 31(9):18 (贺志荣,王芳,周敬恩.金属热处理,2006;31(9):18) |
| [14] | Chang S H,Wu S K.Scr Mater,2006; 55:311 |
| [15] | Huang X,Liu Y.Scr Mater,2001; 45:153 |
| [16] | Vaidynathan R,Bourke M A M,Dunand D C.Metall Mater Trans,2001; 32A:777 |
| [17] | Hosoda H,Hanada S,Inoue K,Fukui T,Mishima Y,Suzuki T.IntermetaUics,1998; 6:291 |
| [18] | Hosoda H,Wakashima K,Miyazaki S,Inoue K.Mater Res Soc Syrup Proc,2005; 842:353 |
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