Improvement in the Mechanical Properties of High Temperature Shape Memory Alloy (Ti₅₀Ni₂₅Pd₂₅) by Copper Addition

Table 2

Yield stress, fracture stress, and fracture strain calculated from stress-strain curves of Figures 2 and 3 for Ti₅₀Ni₂₅Pd₂₅ and Ti₅₀Ni₂₀Pd₂₅Cu₅ alloys.

Alloy	Phase	Testing temperature (°C)	0.2% Yield stress, (MPa)	Fracture stress, (MPa)	Fracture strain, (%)
Ti50Ni25Pd25	Martensite	69	290	951.6	10
	Austenite	217	440	1121.3	8.5
Ti50Ni20Pd25Cu5	Martensite	83	323	1011.6	9.25
	Austenite	228	502	1162.2	7.3