以TiNiCr形状记忆合金为研究对象,着重研究了不同的预变形、中温处理对该形状记忆合金相变的影响,通过示差扫描量热实验和金相组织照片的观察,研究了不同的预变形、中温处理对TiNiCr形状记忆合金的DSC曲线以及相变点的影响.实验表明:马氏体相转变温度Ms:随着冷变形量的增加先升高,当预变形超过15%后,相变点M随预变形量的增加而降低;As,Af在预变形量为15%时达到最大,热处理能显著提高马氏体相变温度.使得相变更容易进行,460℃中温处理使TiNiCr合金Ms增幅较大,而随着热处理温度的继续增加,Ms差距变小;在400℃中温处理下,保温时间越长,Ms,Mf温度降低越明显.而热滞As-Ms几乎不受中温处理时间的影响.
参考文献
| [1] | 舟久保;熙康.形状记忆合金[M].北京:机械工业出版社,1992:120-185. |
| [2] | 赵连城;蔡伟;郑玉峰.合金的形状记忆效应与超弹性[M].北京:国防工业出版社,2002:170-200. |
| [3] | MIYAZAKI S;OHMI Y;OTSUKA K et al.Characteristics of deformation and transformation pseudoelastic in Ti-Ni alloys[J].Journal de Physique,1982,C4:255-259. |
| [4] | Sia Nemat-Nasser;Jeom Yong Choi .Strain rate dependence of deformation mechanisms in a Ni-Ti-Cr shape-memory alloy[J].Acta materialia,2005(2):449-454. |
| [5] | JEE K K;SHIN M C;KIM YG .Preferred orientation and reversible shape memory effect in Ti-Ni alloy[J].Scripta Metallurgica et Materialia,1990,24:921-926. |
| [6] | ZHANG C S;WANG Y Q;CHENG J X.Pseudoelasticity of near-equiatomic Ni-Ti shape memory alloys[A].USA:Asilomar,1994:383-388. |
| [7] | DUERIG T W;ZADNO C R.Engineering Aspects of Shape Memory Alloys[M].Boston:Butterworth-Heinemann,1988 |
| [8] | Choi JY;Nemat-Nasser S .Effect of annealing and initial temperature on mechanical response of a Ni-Ti-Cr shape-memory alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1-2):100-107. |
| [9] | Minoru Nishida;Toru Hara;Takuya Ohba .Experimental Consideration of Multistage Martensitic Transformation and Precipitation Behavior in Aged Ni-Rich Ti-Ni Shape Memory Alloys[J].Materials transactions,2003(12):2631-2636. |
| [10] | HSIEH S F;CHEN S L;LIN H C et al.The machining characteristics and shape recovery ability of Ti-Ni-X(X1/4Zr,Cr)ternary shape memory alloys using the wire eletro-diseharge machining[J].International Journal of Machine Tools and Manufacture,2009,49:509-514. |
| [11] | S. F. Hsieh;S. K. Wu .Damping characteristics of a Ti_(40.5)Ni_(49.5)Zr_(10) shape memory alloy[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2005(1/2):154-160. |
| [12] | 陈飞明,黄金亮,王军,杨会霞.外应力对热弹性马氏体相变的影响[J].洛阳工学院学报,2000(03):5-8. |
| [13] | LIN H C;WU S K;CHOU T S et al.The effects of cold rolling on the martensitic transformation of an equiatomic Ti-Ni alloy[J].Acta Metallurgica Et Materialia,1991,39:2069-2080. |
| [14] | PIAO M;OTSUKA K;MIYAZAKI S et al.Mechanism of the as temperature increase by pre-deformation in thermoelastic alloys[J].Martensitic Transaction JIM,1993,34:919-929. |
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