شماره ركورد كنفرانس :
5339
عنوان مقاله :
Microstructure and tensile properties of Cu-Al-Ni-Ti-Nb shape memory alloy
عنوان به زبان ديگر :
Microstructure and tensile properties of Cu-Al-Ni-Ti-Nb shape memory alloy
پديدآورندگان :
Mohammadzadeh Arya aryamohammadzadeh@ut.ac.ir University of Tehran, Tehran, Iran , Raygan Shahram shraygan@ut.ac.ir University of Tehran, Tehran, Iran
كليدواژه :
Cu , Al , Ni , Ti , Nb shape memory alloy , martensitic microstructure , mechanical properties , second phase
عنوان كنفرانس :
دوازدهمين كنفرانس بين المللي مهندسي مواد و متالورژي
چكيده فارسي :
This study investigates the effects of adding of Ti and Nb elements into the Cu-Al-Ni base system to enhance the microstructural and mechanical properties of CuAlNi shape memory alloys. The newly developed Cu-13.2Al-4.2Ni-0.7Ti-0.5Nb (wt%) alloy exhibits a significantly reduced grain size, down to approximately 188 µm, and a distinctive 18R martensite microstructure with the presence of Nb-rich and Ti-rich phases. X-ray diffraction patterns confirm the presence of the 18R martensite structure and secondary phases. Tensile testing at room temperature demonstrates a remarkable increase in fracture stress to 1583 MPa and improved ductility (8.1%) due to the Ti and Nb additions.
