期刊
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
卷 412, 期 1-2, 页码 235-240出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2005.08.209
关键词
NiTi; shape memory alloy; Nd : YAG laser welding; shape memory effect
The present paper reports the effect of Nd:YAG laser welding on the mechanical and functional properties of Ni-51 at.% Ti alloy. The specimens were prepared from thin sheets and tested in martensitic conditions. The mechanical and shape memory effects of both welded and unwelded material (reference) were measured using standard tensile tests and thermo-mechanical cycles. Differential scanning calorimeter investigations were carried out to determine the phase transformation temperatures. Micro-hardness tests and microscopic investigations were performed in order to evaluate the extension of the heat affected zone and the melting zone. Finally, a systematic comparison of the results between welded and reference specimens was carried out. (c) 2005 Elsevier B.V. All rights reserved.
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