Effect of Heat Treatment on the Mechanical Properties of QT400-18AL Ductile Iron at Low Temperature
The effect of heat treatment on the mechanical properties of ductile iron QT400-18AL was studied.The results indicate that,compared with samples in as-cast condition,the tensile strength and yield strength of samples with heat treatment decrease slightly at room temperature,and the elongation and low temperature impact energy enhance obviously.In addition,the impact fracture surface of those samples with heat treatment evolves from cleavage fracture into ductile fracture.The heat treatment significantly improves the toughness of ductile iron at low temperature.
国家科技期刊平台
NSTL
万方数据
维普
