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First Cycle Effect of Polycrystalline CuZnAl Shape Memory Alloy during Thermal-Mechanical Cycling

Wenge LIU+ , Min ZHU , Dazhi YANG , Dept. of Materials Engineering , Dalian University of Technology , Dalian , 116024 , ChinaZhongguang WANG , State Key Laboratory for Fatigue and Fracture of Materials , Institute of Metal Research , Academia Sinica , Shenyang , 11001

材料科学技术(英文)

The thermal-mechanical (T-M) cycles at constant strain of a polycrystalline CuZnAl alloy have been studied in the. present work. In-situ optical microscopic observations have been made to reveal the features of the phase transitions during T-M cycling. The variation of stress-temperature (S-T) curve...

关键词: CuZnAl shape memory alloy , null , null

ELEVATED AND ROOM TEMPERATURE MECHANICAL BEHAVIOR OF BORON DOPED NiAl ALLOYS

TAN YiDalian University of Technology , Dalian , ChinaSHINODA THitachi Research Laboratory , Hitachi Ltd. 391-12 Hitachi , JapanMISHIMA YTokyo Institute of Technology , Nagatuta. Midori-Ku , Yokohama 227 , JapanSUZUKI TDepartment of Metallurgical Engineering , Tokyo Institute of Technology. Ookayama , Meguro-Ku , Tokyo 152 , Japan

金属学报(英文版)

The effects of boron addition on defect hardening at room temperature and on high temperature creep properties are investigated in the B2 NiAl intermetallic compound. It is found that boron addition is effective on increasing the room temperature hardeness on the Ni-rich side but it has no effect on...

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INTERMETALLIC COMPOUNDS AND THEIR FORMATION REACTIONS IN SYSTEM Fe-Cr-Mo AT HIGH-TEMPERATURES

LIU Shicheng , Dalian Railway Insitute , Dalian , ChinaHamaguchi Yoshikazu , Kuwano Hisashi , Muroran Institute of Technology , Muroran , Japan

金属学报(英文版)

The stable ranges concerning the composition and temperature have been experimentally de- termined for the intermetallic compounds in system Fe-Cr-Mo at high-temperatures. The isothermal section of the Fe-Cr-Mo ternary phase diagram at 1250℃ and the formation re- actions for the intermetallic compou...

关键词: Fe-Cr-Mo system , null , null , null , null

Positron Annihilation Study of the Quenched-in Vacancies in CuZnAl Alloys

Zhongguo WEI and Dazhi YANG (Dept. of Materials Engineering , Dalian University of Technology , Dalian , 116024 , China)

材料科学技术(英文)

The excess vacancies in ternary CuZnAl and Ti-doped CuZnAl alloys quenched from temperatures between 673 K and 1223 K, and the behaviour of the quenched-in vacancies on postquench aging in martensite phase have been studied by Doppler broadening measurements. It has been found that adding Ti to the ...

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