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Cu-Al-Mn shape memory alloys of a variety of composition were characterized in terms of shape memory properties and cold workability. Cold workability tested by cold rolling indicated that the alloys solution treated in the ${\alpha}+{\beta}$ region have a higher ductility than those solution treated in the ${\beta}$ region. Also it is known that cold workability increased with the decrease in Al content in the ${\beta}$ region. This seems to be resulted from the fact that Mn addition causes to expand ${\beta}$ region toward lower Al content and lower order-disorder transition temperature, consequently, ${\beta}$ of excellent workability being frozen even at room temperature. Experimental results regarding shape memory showed that the properties were better with a higher Al contents at a given Mn content, which is closely related with martensitic transformation. It is also shown that super elasticity limit was enhanced with decrease in the yield strength of alloys because a lower yield strength seems to initiates slip at the lower applied stress.
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참고문헌 (10)
참고문헌 신청
U. S. Mallik / 2008 / Journal of Alloys and Compounds 459:142~147
R. Kainuma / 1996 / Metallurgical and Materials Transactions 27:2187~2195
Feng Chen / 2009 / International Journal of Modern Physics B 23:1931~1936
Y. Sutou / 2008 / Materials Science and Technology 24:896~901
R. Kainuma / 1998 / Journal of Alloys and Compounds 266:191~200
R. Kainuma / 1996 / Metallurgical and Materials Transactions 27:2187~2195
Feng Chen / 2009 / International Journal of Modern Physics B 23:1931~1936
Y. Sutou / 2008 / Materials Science and Technology 24:896~901
R. Kainuma / 1998 / Journal of Alloys and Compounds 266:191~200
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