شماره ركورد كنفرانس :
5339
عنوان مقاله :
Transformation temperatures and tensile properties of Cu-Al-Ni-Ti-Nb-B shape memory alloy
عنوان به زبان ديگر :
Transformation temperatures and tensile properties of Cu-Al-Ni-Ti-Nb-B shape memory alloy
پديدآورندگان :
Mohammadzadeh Arya aryamohammadzadeh@ut.ac.ir University of Tehran, Tehran, Iran , Rajabzadeh Mojtaba rajabzadeh.m@ut.ac.ir University of Tehran, Tehran, Iran , Raygan Shahram shraygan@ut.ac.ir University of Tehran, Tehran, Iran
كليدواژه :
effect of alloying , high , temperature shape memory alloys (HTSMAs) , mechanical properties , transformation temperatures
عنوان كنفرانس :
دوازدهمين كنفرانس بين المللي مهندسي مواد و متالورژي
چكيده فارسي :
This research investigates the Cu-Al-Ni-Ti-Nb-B high-temperature shape memory alloy (HTSMA). The alloy s composition and microstructure were analyzed, revealing the presence of an orthorhombic 18R structure and a Ti-rich second phase. Calorimetric experiments determined transformation temperatures, with As and Af at 181℃ and 207℃ for the austenitic phase during heating, and Ms and Mf at 200℃ and 189℃ for the martensitic phase during cooling. The alloy exhibited improved mechanical properties, with a tensile strength of 1574 MPa and 5.5% elongation, attributed to grain and martensite refinement and the presence of niobium-based particles.
