【摘 要】
：
The influence of external field(magnetic field and stress field) on the transformation strain of Ni52.9-Mn24.4Ga22.7 single crystal were investigated and its me
【机 构】
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School of Materials Science and Engineering,State Key Laboratory for Magnetism
论文部分内容阅读
The influence of external field(magnetic field and stress field) on the transformation strain of Ni52.9-Mn24.4Ga22.7 single crystal were investigated and its mechanism was also discussed. When thermally martensitictransformation occurs, about 0.25% transformation strain is obtained which may be obviously enhanced to about0. 8% by a 6 000 Oe magnetic bias field. However, the strain decreases by the external compress stress loaded alongthe strain-measured direction. When the external compress stress and bias magnetic field are simultaneously applied,the transformation strain decreases with increasing the magnetic field, which is related to the rearrangement of themartensite variants influenced by the external field.
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