Title时效对TiNiCr形状记忆合金马氏体相变与超弹性的影响(英文)
Other TitlesEffect of aging on martensitic transformation and superelasticity of TiNiCr shape memory alloy
Authors佟运祥
刘珺婷
陈枫
梁楚锜
田兵
李莉
郑玉峰
Affiliation哈尔滨工程大学生物医学材料与工程研究中心
北京大学工学院材料科学与工程系
KeywordsTiNiCr
形状记忆合金
Ti3Ni4析出相
马氏体相变
超弹性
时效
TiNiCr
shape memory alloy
Ti3Ni4 precipitate
martensitic transformation
superelasticity
aging
Issue Date2014
Publishertransactions of nonferrous metals society of china
CitationTransactions of Nonferrous Metals Society of China.2014,(08),2598-2605.
Abstract通过X射线衍射分析(XRD)、透射电子显微观察(TEM)、差式扫描量热分析(DSC)与拉伸实验研究时效处理对Ti48.4Ni51.1Cr0.5合金显微组织、马氏体相变与超弹性的影响规律与机制。经400°C时效处理30 min后,合金中形成Ti3Ni4析出相。当时效温度介于400°C和500°C之间时,合金表现出两步马氏体相变。经时效处理的Ti48.4Ni51.1Cr0.5合金在室温下表现出优异的超弹性。随时效温度自300°C升高到450°C,超弹性恢复率增加。继续升高时效温度,恢复率下降。超弹性应力滞后表现出相反的变化趋势。通过分析Ti3Ni4析出相随时效处理的演化规律解释了时效处理与马氏体相...
The effect of aging on microstructure, martensitic transformation and superelasticity of a Ti48.4Ni51.1Cr0.5 alloy was investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), differential scanning calorimetry (DSC) analysis and tensile tests. When the alloy was aged at 400 degrees C for 30 min, Ti3Ni4 precipitate appears. When aged at a temperature between 400 degrees C and 500 degrees C, the samples show a two-stage martensitic transformation. The aged Ti48.4Ni51.1Cr0.5 alloy exhibits a well-defined superelasticity at room temperature. The recovery ratio increases with increasing aging temperature from 300 to 450 degrees C. Further increase of aging temperature leads to the decrease of recovery ratio. The stress hysteresis shows the opposite dependence on aging temperature. The relationship between aging treatment and martensitic transformation and superelasticity can be rationalized by the evolution of Ti3Ni4 precipitate.
URIhttp://hdl.handle.net/20.500.11897/210068
ISSN1003-6326
DOI10.1016/S1003-6326(14)63388-4
IndexedSCI(E)
中国科技核心期刊(ISTIC)
Appears in Collections:工学院

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