The effect of dynamic aging on the cyclic stability of Cu73Al16Mn11 shape memory alloy Academic Article

abstract

• 2017 This study focuses on the effect of dynamic aging on the thermo-mechanical cyclic stability of Cu73Al16Mn11 (at%) shape memory alloy (SMA) during constant stress (isobaric) and stress-free heating-cooling experiments. Isobaric heating-cooling experiments under various tensile stress magnitudes revealed almost no residual strain up to 60MPa. Subsequently, the cyclic stability of the samples was further investigated via thermal cycles under 60MPa with increasing upper cycle temperature (UCT) values. The increase in UCT led to the ordering of the parent phase and formation of the bainite and phases. In addition to the effect of UCT on the formation of bainite, stress had an accelerating effect on the bainitic transformation. The martensitic transformation temperatures increased due to ordering when UCTs were set to 120C and 145C and then started to decrease due to the formation of the bainite and phases when the UCTs were set to 175C and 205C. Consequently, it was determined that the cyclic stability of Cu-Al-Mn SMAs for high temperature applications strongly depends on the UCT.

authors

• Karaman, Ibrahim

published proceedings

• MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

author list (cited authors)

• Babacan, N., Atli, K. C., Turkbas, O. S., Karaman, I., & Kockar, B.

citation count

• 13

complete list of authors

• Babacan, N||Atli, KC||Turkbas, OS||Karaman, I||Kockar, B

publication date

• July 2017

publisher

• Elsevier  Publisher

published in

• Materials Science & Engineering: A  Journal

keywords

• Bainitic Transformation
• Cu-al-mn
• Cyclic Stability
• Martensitic Transformation
• Shape Memory Alloys

Digital Object Identifier (DOI)

• 10.1016/j.msea.2017.06.104

start page

• 352

end page

• 358

volume

• 701

URL

• http://dx.doi.org/10.1016/j.msea.2017.06.104