用示差扫描量热仪研究了退火温度、退火时间和时效温度、时效时间对Ti-50.2Ni(摩尔分数)形状记忆合金丝相变特性的影响,给出了退火、时效工艺对该合金R、M相变温度和热滞的影响规律.结果表明:350～550℃退火态合金冷却/加热相变类型为A→R→M/M→A(A-母相,R-R相,M-马氏体),600～800℃退火态为A→M/M→A,400℃长时间退火态相变类型为A→R→M/M→R→A;随时效时间延长,300℃时效态合金的相变类型经过A→M/M→A到A→R→M/M→A再到A→R→M/M→R→A的转变,400℃时效态相变类型经过A→M/M→A到A→R→M/M→A的转变,500℃时效态相变类型则保持A→M/M→A不变.
参考文献
| [1] | Otsuka K;Wayman C M.Shape Memory Materials[M].CAMBRIDGE:CAMBRIDGE UNIVERSITY PRESS,1998:49-58. |
| [2] | Jan Van Humbeeck .Non-medical applications of shape memory alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1999(0):134-148. |
| [3] | K. Otsuka;X. Ren .Martensitic transformations in nonferrous shape memory alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1999(0):89-105. |
| [4] | 贺志荣,周敬恩,宫崎修一.固溶时效态Ti-Ni合金相变行为与Ni含量的关系[J].金属学报,2003(06):617-622. |
| [5] | Todoroki T;Tamura H .Effect of heat treatment after cold working on the phase transformation in TiNi alloys[J].Trans JIM,1987,28(02):83-94. |
| [6] | 贺志荣;张永宏;解念锁;刘琛 .影响TiNi合金弹簧元件应变恢复率的因素[J].中国有色金属学报,1998,8(z1):218-222. |
| [7] | 贺志荣,王芳,周敬恩.Ni含量和热处理对Ti-Ni形状记忆合金相变和形变行为的影响[J].金属热处理,2006(09):17-21. |
| [8] | Khalil-Allafi J;Ren X;Eggeler G .The mechanism of multistage martensitic transformations in aged Ni-rich TiNi shape memory alloys[J].Acta Materialia,2002,50:793-803. |
| [9] | Kim J I;Liu Y;Miyazaki S .Ageing-induced two-stage R-phase transformation in Ti-50.9at%Ni[J].Acta Materialia,2004,52:487-499. |
| [10] | R. VAIDYANATHAN;M.A.M. BOURKE;D.C. DUNAND .Texture, Strain, and Phase-Fraction Measurements during Mechanical Cycling in Superelastic NiTi[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2001(3a):777-786. |
| [11] | 贺志荣,张永宏,王永善,周敬恩.Ti49.4Ni50.6超弹性弹簧的相变和形变特性[J].金属学报,2004(01):46-50. |
| [12] | Kim J I;Miyazaki S .Effect of low-temperature aging on the R-phase transformation of a Ti-50.9Ni alloy[J].MATERIALS SCIENCE FORUM,2002,394-395:225-228. |
| [13] | Kim JI;Miyazaki S .Effect of nano-scaled precipitates on shape memory behavior of Ti-50.9at.%Ni alloy[J].Acta materialia,2005(17):4545-4554. |
| [14] | 贺志荣 .富镍TiNi形状记忆合金析出物的形态与组成[J].功能材料,1998,29(02):157-160,164. |
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