Effects of additions of small amounts of fourth elements on structure, crystal structure and shape recovery of Cu-Zn-Al shape memory alloys

Journal Article · Wed Jan 15 00:00:00 EST 1997 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(96)00366-1· OSTI ID:417910

Zhang, M R ^[1]; Yang, D Z ^[2]; Tadaki, T; Hirotsu, Y ^[1]

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1. Osaka Univ., Ibaraki, Osaka (Japan). Inst. of Scientific and Industrial Research
2. Dalian Univ. of Technology (China). Dept. of Materials Engineering

Cu-based shape memory alloys (SMAs) are particularly interesting, compared to Ni-Ti SMAs because of their low cost and relatively ease process. However, there are important problems to be solved, such as intergranular fracture due to large grain size, stabilization of martensite, etc. In the present work, the influences of additions only less than 1 mass% of several fourth elements, such as Mn, Fe, Co, Ni, and Y, to two kinds of Cu-Zn-Al SMAs, i.e., Cu-30Zn-4Al and Cu-25Zn-7Al on their structure, crystal structure and shape recovery have been examined in order to know what elements are the most effective for the thermal stability of the parent and martensite phases and the shape memory capacity.

• OSTI ID: 417910
• Journal Information: Scripta Materialia, Vol. 36, Issue 2; Other Information: PBD: 15 Jan 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER ALLOYS
MICROSTRUCTURE
CRYSTAL STRUCTURE
SHAPE MEMORY EFFECT
ZINC ALLOYS
ALUMINIUM ALLOYS
MANGANESE ADDITIONS
IRON ADDITIONS
COBALT ADDITIONS
NICKEL ADDITIONS
YTTRIUM ADDITIONS
GRAIN SIZE
GRAIN BOUNDARIES
CRYSTAL-PHASE TRANSFORMATIONS
EXPERIMENTAL DATA