检索结果-南通市图书馆

transformation hysteresis AND STABILITY OF STRAIN MARTENSITE IN A Ni_(47)Ti_(44)Nb_9 ALLOY

Acta Metallurgica Sinica(English Letters) 1991年第6期4卷 436-440页

作者： ZHANG Chunsheng CAI Wei ZHAO Liancheng Harbin Institute of Technology,Harbin,China

The transformation hysteresis and stability of strain martensite in Ni_(47)Ti_(44)Nb_ alloy have been studied by means of tensile tests at various temperatures and electrical resistance measurements as well as TEM *** was shown that there is a characteristic deformation temperature and a strain range,in which the critical yield stress for stress-in- duced transformation acquires optimum matching with the yield strength of the β-Nb parti- *** this case,deformatian can effectively increase the transformation hysteresis,while the strain recovery ratio remains usefully *** martensite with irreguldar *** substructure and martensite containing some dislocations as well as martensite intersected by the β-Nb particles possess high stability.

关键词： NiTiNb shape memory alloy transformation hysteresis strain martensite

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Martensitic transformation involved mechanical behaviors and wide hysteresis of NiTiNb shape memory alloys

引用

Progress in Natural Science:Materials International 2012年第2期22卷 130-138页

作者： Minjuan Wang a,b,Mingyang Jiang a,Guangyue Liao a,Shun Guo a,Xinqing Zhao a,a School of Materials Science and Engineering,Beihang University,Beijing 100191,China b Beijing Institute of Aeronautical Materials,Beijing 100095,China School of Materials Science and Engineering Beihang University Beijing 100191 China Beijing Institute of Aeronautical Materials Beijing 100095 China

On the basis of thermoelastic martensitic transformation involved,the mechanical behaviors of NiTiNb shape memory alloys were experimentally studied and their wide hysteresis effect was theoretically *** was found that even at the same temperature NiTiNb shape memory alloys perform different mechanical behaviors when under different *** addition,the yielding behavior for the reorientation of martensite is dependent on the martensitic transformation temperature of NiTiNb *** alloy with lower MS temperature exhibits lower yield stress for the reorientation of *** to kinetic and thermodynamic analysis of thermoelastic martensitic transformations,a relationship between the relaxation of elastic energy and the hysteresis expansion was *** is suggested that the mechanism for wide hysteresis of NiTiNb shape memory alloys is predominantly attributed to the Nb element dissolved in the matrix of NiTi(Nb)phase,rather than the precipitated b-Nb *** mechanism gains support from the present experimental study that the NiTiNb alloys with low Nb content exhibit wide transformation hysteresis upon a proper pre-deformation.

关键词： NiTiNb Martensitic transformation Shape memory alloy Mechanical behavior transformation hysteresis

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Mechanical Properties and transformation Behavior of NiTiNb Shape Memory Alloys

引用

Chinese Journal of Aeronautics 2009年第5期22卷 540-543页

作者： Liu Wei Zhao Xinqing School of Materials Science and Engineering Beijing University of Aeronautics and Astronautics Beijing 100191 China

NiTiNb shape memory alloys have attracted much attention in pipe coupling or sealing system because of their large transformation hysteresis upon a proper pre-deformation. In order to clarify the effects of adding Nb on the mechanical properties as well as the transformation behavior of NiTiNb shape memory alloys, Ni47Ti44Nb9 and Ni49.8Ti45.2Nb5 alloys with different microstructures but with similar martensitic transformation start temperature, are prepared. Comparative studies on the microstructures, mechanical proPerties and transformation characteristics are conducted by means of scanning electron microscopy （SEM）, phase transformation measurements and mechanical property tests. It is found that Nia7Ti44Nb9 and Ni49.8Ti45.2Nb5 alloys possess similar transformation hysteresis in the as-annealed state. However, the presence of Nb and its status exerts important effects on the mechanical properties, especially the yield strength and the yield behavior of the alloys. Ni49.8Ti45.2Nb5 alloy exhibits remarkable increase in the yield strength than the Ni47Ti44Nb9 alloy. The transformation hysteresis of both alloys under pre-deformation is characterized and the relative mechanism is discussed.

关键词： NiTiNb martensitic transformation mechanical properties transformation hysteresis microstructure

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：