발간논문

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Vol.30, No.2, 210 ~ 216, 1992
Title
The B2 B19 B19' Transformation Behaviour in a Ti - 35Ni - 15Cu ( at% ) Shape Memory Alloy
남태현Tae Hyun Nam, 임승택Seung Taeg Leem, 천병선Byong Sun Chun
Abstract
Transformation behaviour of a Ti-35Ni-15Cu(at%) shape memory alloy has been investigated by means of electrical resistivity measurement, differential scanning calorimetry, X-ray diffraction and transmission electron microscopy. Transformation occurred in two stages, i.e., B2◎B19◎B19` and the B19→B19` transformation was not complete even at 83K. The B19◎B19` transformation was not clear in DSC curves, while it was clear in the electrical resistivity vs. temperature curve. The B19 martensite did not involve internal defects such as dislocation and twin. This corresponded well to the fact that the lattice distortion associated with the B2→B19 transformation satisfied the invariant plane strain condition
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