摘要
采用微波烧结和常规烧结工艺分别制备粉末冶金低合金钢Fe-4Ni-2Cu-0.6Mo-0.6C,研究不同烧结工艺对该合金密度、抗拉强度和硬度的影响,并借助扫描电镜和光学显微镜观察合金试样的断裂类型及试样的显微组织。结果表明:该合金在微波烧结温度为1 300℃时,抗拉强度可达到655 MPa,硬度90 HRB;和常规烧结工艺相比,微波烧结不仅使烧结时间大幅缩短,而且可提高低合金钢的抗拉强度和硬度。
Powder metallurgical low alloy steel （Fe-4Ni-2Cu-0.6Mo-0.6C） was prepared respectively by microwave and conventional processes to research the influence of the sintering process on density, tensile strength and hardness, and the fracture type and the sintered microscopic structure of the alloy sample were analyzed by SEM and optical microscope. The results show that the tensile strength reaches 655 MPa and the hardness reaches HRB90 when sintering at 1 300℃ using microwave. Compared with the conventional sintering, the microwave sintering could not only reduce sintering time in large range, but also increase the tensile strength and hardness of the prepared alloy steel.
出处
《粉末冶金材料科学与工程》
EI
2009年第2期119-122,共4页
Materials Science and Engineering of Powder Metallurgy
基金
国家科技攻关项目
关键词
微波烧结
粉末冶金
低合金钢
性能
microwave sintering
powder metallurgy
low alloy steel
properties
