机构地区: 华南理工大学机械与汽车工程学院国家金属材料近净成形工程技术研究中心
出 处: 《北京科技大学学报》 2010年第3期336-339,共4页
摘 要: 使用水雾化铁粉等原料制备十字形试样,对脱脂工艺、微观组织进行了分析,得到的理想脱脂工艺为:先以较快的速率升温到160℃,然后以1℃.min-1的速率升温到300℃,保温0.5h,再以1.5℃.min-1的速率升温到450℃,保温0.5h.烧结在1300℃进行.实验结果表明,通过优化脱脂工艺,使用流动温压工艺,可以制备出成本低廉、形状复杂的结构件. Water-atomized iron powders were used by warm flow compaction to fabricate cross-shaped parts.The degrease process and microstructure of sintered parts were investigated.The optimal degrease process is to raise the temperature from ambient temperature to 160 ℃,then raise to 300 ℃ at a rate of 1 ℃·min^-1 and hold at 300 ℃ for 0.5 h,followed by raising the temperature to 450 ℃ at a rate of 1.5 ℃·min^-1 and hold at 450 ℃ for 0.5 h.Sintering was carried out at 1 300 ℃.It is shown that at the proper degreasing parameters the warm flow compaction method can produce complex-shaped components with low cost.