制造零件用的铬钢粉

CHROMIUM STEEL POWDERS FOR COMPONENTS

作为一种合金化元素,铬由于价格低廉、淬透性高及可重复利用,具有重要意义。近年来,预合金化铬粉由于价格低容易得到,用途在增多。总的生产成本低这是将零件从钢材转为粉末冶金材料的驱动力。通过采用预合金化铬材料,和常规钢零件相比,粉末冶金产业将进一步增加其市场的份额。这篇论文考察了二种预合金化铬铁粉,一是用于高强度应用的含3%Cr与0.5%Mo的Astaloy CrM,另外一种是用于中等强度应用的含1.5%Cr与0.2%Mo的Fe-1.5Cr-0.2Mo。说明了上述材料在含碳量为0.2%～0.8%范围的力学性能。

Chromium as an alloying element is of great interest due to its low cost,high hardenability and possibility to recycle. Use of pre-alloyed chromium powders has increased recently due to its accessibility at low cost. Low total cost is and has been the driving force to convert parts made from conventional steel to PM material. By use of pre-alloyed chromium material,the PM industry can further increase its market share, compared to conventional steel. Two pre-aUoyed iron powders,one for high strength applications containing 3 % Cr and 0.5 % Mo and one for medium strength applications containing 1.5 % Cr and 0.2% Mo are considered in this paper. The mechanical properties for mentioned materials in the carbon range from 0. 2 to 0.8% are described.