【摘 要】
：
The properties and microstructure of microwave and conventional sinteredFe-2Cu-0.6C powder metallurgy (PM) alloys were investigated. The experimental results show that microwave sintered alloy has the better properties (sintered density 7.20 g/cm3, Rockwe
【机 构】
：
State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China
【出 处】
：
武汉理工大学学报(材料科学版)(英文版)
论文部分内容阅读
The properties and microstructure of microwave and conventional sinteredFe-2Cu-0.6C powder metallurgy (PM) alloys were investigated. The experimental results show that microwave sintered alloy has the better properties (sintered density 7.20 g/cm3, Rockwell hardness 75HRB, tensile strength 413.90 Mpa and elongation 6.0%), compared with the conventional sintered counterpart. Detailed analyses by using optical microscopy and scanning electron microscopy (SEM)reveal that microwave sintered sample has finer microstructure with small, rounded and uniformly distributed pores, and also demonstrate the presence of more flaky and granular pearlite in the mi-crowave sintered body, both of which account for the property improvement. SEM images on the fracture morphology indicate that a mixed mode containing ductile and brittle fracture is presented in microwave sintered alloy, in contrast with the brittle fracture in conventional sintered counterpart.
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