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用拉伸试验和透射电子显微镜研究了固溶时效处理对Ti-50.8Ni-0.3Cr形状记忆合金拉伸性能和显微组织的影响.800℃固溶淬火态合金的塑性优于时效态.随时效时间fag延长,300和400℃时效态合金的抗拉强度Rm300和Rm400先急剧增大后趋于稳定,且Rm300<Rm400,延伸率A300和A400先急剧减小后趋于稳定;500℃时效后,Rm500先急剧减小后趋于稳定,A500先急剧增大后趋于稳定.随fag延长,300和400℃时效态合金的应力诱发马氏体临界应力RM300和RM400均逐渐减小,而RM500则先减小后增加再减小,极大值在fag=5~10 h时取得.此外,随fag延长,300℃对效态合金的Ti3Ni4析出相呈细小颗粒状弥散分布;400℃时效态合金的Ti3Ni4析出相由颗粒状演变成透镜状;500℃时效态合金的Ti3Ni4析出相发生由透镜状向针状再向粗片状演变.时效温度对Ti3Ni4析出相形态的影响效果比时效时间显著.

参考文献

[1] Seyyed Aghamiri S M;Nili Ahmadabadi M;Raygan S et al.[J].Journal of Materials Engineering and Performance,2009,18(5-6):843.
[2] Christian Sander;Franz Martin Sander;Franz Günter Sander .[J].J Orofacial Orthopedics,2006,67:117.
[3] Dolce M;Cardone D .[J].International Journal of Mechanical Sciences,2001,43(11):2657.
[4] Dong Y S;Xiong J L;Li A Q et al.[J].Materials Science and Engineering,2006,416A:92.
[5] Li H J;Dunne D .[J].ISIJ International,1997,37(06):605.
[6] Zhang C;Farhat Z N .[J].Wear,2009,267:394.
[7] Pieczyska E;Nowacki W;Sakuragi T et al.[J].Engineering Plasticity and Its Applications,2007,340-341:1211.
[8] 贺志荣.Ti-50.8Ni-0.3Cr超弹性合金的相变与形变特性[J].金属学报,2008(09):1076-1080.
[9] Sia N N;Jeom Y C .[J].Acta Materialia,2005,53:449.
[10] 王启,贺志荣,王永善,杨军.退火温度和应力-应变循环对Ti-Ni-Cr形状记忆合金超弹性的影响[J].金属学报,2010(07):800-804.
[11] Jafar Khalil-Allafi;Antonin Dlouhy;Gunther Eggeler .Ni_4Ti_3-precipitation during aging of NiTi shape memory alloys and its influence on martensitic phase transformations[J].Acta materialia,2002(17):4255-4274.
[12] Sehitoglu H;Jun J;Zhang X et al.[J].Acta Materialia,2001,49:3609.
[13] Jeom Y C;Sia N N .[J].Materials Science and Engineering,2006,432A:100.
[14] Holec D;Bojda O;Dlouhy A .[J].Materials Science and Engineering,2008,481-482A:462.
[15] Patel J R;Coben M .[J].Acta Materialia,1953,1:531.
[16] Chang B C;Shaw J A;Iadicola M A .[J].Continuum Mechanics and Thermodynamics,2006,18(1-2):83.
[17] 贺志荣,王芳.热处理对Ti-Ni-Cr低温超弹性合金相变行为的影响[J].金属学报,2010(03):329-333.
[18] Lin H C;Wu S K;Chou T S et al.[J].Acta Metallurgica Et Materialia,1991,39:2069.
[19] 赵连城;蔡伟 .[J].金属学报,1997,33(01):90.
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