WC对合金化烧结硬化钢的性能影响

应用粉末冶金烧结合金化及温压成形技术,制备了Fe-Mo-Mn-Cu-W-C烧结硬化钢摩檫材料,研究了该材料的组织结构和性能.结果表明:加入经过特殊处理的合金化元素后,烧结硬化钢的主要金相组织为珠光体、下贝氏体以及少量铁素体,材料的密度、强度、硬度及基体的耐磨性大幅度提高.Mn-Mo合金在高碳保护下加入到基体中,在烧结过程中产生了部分液相,因而促进了致密化过程.W以碳化物的形式加入到Fe-Mn-Mo-Cu-C烧结硬化钢基体中,起到了弥散强化的作用,材料的磨损量显著降低.

Effect of WC on the properties of alloying sintered harding steel

Powder Metallurgy sintered alloying and warm compaction techniques were used to prepare the Fe-Mo-Mn-Cu-W-C sintering-hardened frictional, materials, and the microstructure and properties of the materials were also investigated. The results showed the microstructure was mainly composed of pearlite, barite and a little amount of ferrite with adding the specially treated alloying elements. Meanwhile, the density, strength, hardness and wear-resistance of the materials were increased greatly. Mn-Mo alloy under the protection of high contented carbon was added into the metal matrix; liquid phase was partly produced to accelerate densification process. The wear amount of the materials was remarkably reduced due to the dispersed strength of tungsten carbide that was added into Fe-Mn-Mo-Cu-C sintering-hardened steel.