Deformation behaviors at various temperatures and corresponding microscturcures of Ti36Ni49Hf15 alloy

作者：Liu LH^*; Meng XL; Cai W; Zhao LC

来源：Journal de Physique IV, 2003, 112: 755-758.

DOI：10.1051/jp4:2003992

The deformation behaviors at various temperatures and corresponding microstructures of Ti36Ni49Hf15 high temperature shape memory alloy had been studied. The tensile behavior of the Ti36Ni49Hf15 alloy is characterized by continuous yielding and high work hardening in the temperature range from 293K to 673K. The critical stress for martensite variant reorientation is relatively high and a maximum elongation of about 30% is observed at about 5 10K. No superelasticity is observed. The substructure of SIM and deformed SIM in the present alloy is (001) compound twin. Martensite variants are (011) type I twin related. Further increasing the deformation temperature and strain, the preferential oriented SIM gradually develop to martensite variants with variant-crack/variant-intersect morphologies.

• 出版日期2003-10
• 单位哈尔滨工业大学