材料期刊网

Internal Friction in a Shape Memory Alloy Cu-Zn-Al under Equilibrium Condition

ZHAO Zengqi , CHEN Feixia , LI Ximeng , YANG Dazhi Dalian University of Technology , China.

材料科学技术（英文）

关键词: CuZnAl alloy , null , null , null

INFLUENCE OF GRAIN SIZE AND ORDERING DEGREE OF PARENT PHASE ON SME IN A CuZnAl ALLOY CONTAINING BORON

WU Jianxin JIANG Bohong XU Zuyao(Hsu T.Y.) Shanghai Jiaotong University , Shanghai , China [Originally published in ACTA METALL SIN(CHINESE EDN)25(3)1989 pp A173—A178. Professor , Dept.of Materials Science , Shanghai Jiaotong University , Shanghai , China

金属学报(英文版)

The influence of grain size and ordering degree of the parent phase on the shape memory re- covery in a Cu-25.62Zn-3.97Al-0.0018B(wt-%)memory alloy is investigated.A mathematical relationship is set up between the recovery ratio and ordering degree,probabili- ty of atoms at their ordered sites,grain...

关键词: CuZnAl alloy , null , null , null

马氏体状态形变对Cu-Zn-Al记忆合金形状回复的影响

李兵 , 江伯鸿 , 徐祖耀

金属学报

本文系统研究了Cu-Zn-Al形状记忆合金中形变度对形状回复的影响。从马氏体变态再取向的微观模型出发,阐明了预变形度ε对形状回复率η的影响规律及其本质。存在一个临界变形度ε_L(～2％),当ε<ε_L时,η随ε呈线性地增加(η=K_1ε-K_2d~(-1/2)),当ε>ε_L时,η随ε的...

关键词: 形状记忆效应 , martensitic variant , re-orientation , CuZnAl alloy

CuZnAl合金的马氏体及其相变的阻尼性能

程饴萱 , 陈继勤 , 方晓旻 , 吕卫平

金属学报

本文研究了CuZnAl合金在马氏体及马氏体相变时的阻尼性能。结果表明,在马氏体状态的内耗是一种M/M界面内耗,利用位错内耗理论的表达式可解释其变化规律。在马氏体相变区的内耗,包括M/M界面内耗及相变内耗两级分,其中相变内耗又由马氏体逆转变产生的内耗及应力诱发马氏体内耗两部分组成,并且前者占主导地位、...

关键词: CuZnAl合金、马氏体 , CuZnAl alloy , martensite

DAMPING PROPERTIES OF MARTENSITE AND MARTENSITIC TRANSFORMATION IN CuZnAl ALLOYS

CHENG Yixuan CHEN Jiqin FANG Xiaomin L(?) Weiping Zhejiang University , Hangzhou , China

金属学报(英文版)

The internal friction of alloys in martensite state is believed to be an M/M interface one, which can be explained by an expression deduced from the theory of dislocation internal fric- tion.The internal friction during martensitic transformation consists of two parts,including those of the M/M inte...

关键词: damping property , null , null , null

Relationship between Relaxation Internal Friction Peak at about 200℃(f≈1Hz)and Bainitic Transformation In a CuZnAl Alloy

ZHAO Zengqi CHEN Feixia YANG Dazhi BAO Er ** Physical Laboratory , Baotou Research Institute of Rare Earth , Baotou , 014010 , China*** Dept.of Materials Engineering , Dalian University of Technology , Dalian , 116024 , China**** Dept.of Materials Engineering , Yanshan Uni

材料科学技术（英文）

The present investigation showed that the re- laxation peak at about 200℃ (f≈1Hz) was related to bainitic transformation in a CuZnAl alloy.The peak decreased when bainite precipitated.The activation energy of the peak was the same as the apparent activation energy of bainitic transforma- tion.Accord...

关键词: internal friction , null , null , null

FINE STRUCTURE VARIATION OF 18R MARTENSITE UNDER DEFORMATION IN POLYCRYSTALLINE CuZnAl AI JOY

ZHU Min LI Guobin YANG Dazhi Dilian University of Technology , Dalian , China Dept.of Materials Engineering , Dalian University of Technology , Dalian 116024 , China

金属学报(英文版)

The transmission electron microscopy has been used to investigate the fine structure variation of 18R martensite under deformation in a polycrvstalline CuZnAl shape memory alloys.It has been found that the strain is gabined by the reorientation of martensite variants in the ini- tial deformation sta...

关键词: fine structure , null , null , null

Isothermal Aging Kinetics in CuZnAl Shape Memory Alloy

Zengqi ZHAO Lab.of Physics , Baotou Research Institute of Rare Earth , Baotou , 014010 , ChinaFeixia CHEN Dazhi YANG Dept.of Mater.Eng. , Dalian University of Technology , Dalian , 116024 , ChinaEr BAO Dept.of Mater.Eng. , Yanshan University , Qinhuangdao , 066004 , China

材料科学技术（英文）

Isothermal aging behaviours of a CuZnAl shape memory alloy have been investigated by means of dilatometry.The length of the specimens during isothermal aging from 190 to 280℃ increases with the aging time at each temperature.The isothermal aging kinetics fits in Avrami equation and the time exponent...

关键词: isothermal aging kinetics , null , null , null , null

Influence of α Phase on Shape Memory Effect and Superelasticity of CuZnAI Alloy

QI Min ZHU Min ZHAO Xu YANG Dazhi ** Dept.of Materials Engineering , Dalian University of Technology , Dalian , 116023 , China*** Institute of Metals Research , Academia Sinica , Shenyang , 110015 , China+ To whom correspondence should be addressed

材料科学技术（英文）

The influence of a small amount of α phase in β′ matrix on shape memory effect and superelasticity of CuZnAl shape memory alloy has been studied systematically.It has been found that transformation temperature can be adjusted in a large scale by controlling the amount of α phase, meanwhile,shape mem...

关键词: αphase , null , null , null

Cu基形状记忆合金干滑动磨损研究

王红卫 , 吴望子 , 王凤庭 , 杨大智

金属学报

对Cu基形状记忆合金CuZnAl进行了干滑动磨损,采用扫描电镜观察磨损表面及磨屑.结果表明,CuZnAl合金的磨损过程受塑性变形控制,粘着与转移磨损和剥离磨损是材料失重的两种主要机制.电镜薄膜拉伸时显微裂纹尖端发生了应力诱发马氏体相变.用显微裂纹钝化作用的马氏体择优取向机制和应力诱发马氏体相变机制阐...

关键词: 铜基形状记忆合金 , shape memory alloy , wear