Failure Analysis of the Pin Bore of the Combined Piston for the Aero Engine

Table 1

Mechanical performance parameters of piston components.

Name	Yield strength (MPa)	Tensile strength (MPa)	Elasticity modulus (GPa)	Thermal conductivity (W/(m·K))	Coefficient of linear thermal expansion (M/(m·K))	Poisson ratio
Piston crown	≥205	≥520	206	16.3		0.31
Piston skirt	≥152	≥251	71	163		0.33