摘要
低预合金粉烧结硬化工艺是将烧结与热处理合为一道工序的工艺,可以缩短生产周期和降低成本,同时低合金也可降低淬透性。主要研究了某公司生产的1300WA(0.5Mo-1.8Ni)及5301SH(0.5Ni-0.9Mo-0.38Mn)两种烧结硬化粉混入不同含量Cu和C后,在冷却速率为0.56～1.94℃/s范围内的硬化能力。结果表明:两种材料内的马氏体含量随着冷却速率的提高而明显增加,烧结硬化能力随Cu含量的增加而明显提高。当Cu质量分数大于1.5%,冷却速率高于1.61℃/s时,5301SH烧结后可以得到几乎全部马氏体相;而1300WA需要在Cu质量分数大于2.0%,且冷却速率达到1.94℃/s时达到类似效果。
The sinter hardening process of low pre-alloyed powder is a process combining sintering and heat treatment, which can shorten the production cycle and reduce the cost,and at the same time,low alloy can also reduce hardenability. The hardening ability of 1300WA(0.5Mo-1.8Ni)and 5301SH(0.5Ni-0.9Mo-0.38Mn)sintered powders produced by some company,after mixing Cu and C with different contents was studied in the cooling rate range of 0.56-1.94 ℃/s. The results show that the martensite content in the two materials obviously increases with the increase of cooling rate, and the sintering hardening ability obviously increases with the increase of Cu content. When the mass percent of Cu is more than 1.5% and the cooling rate is higher than 1.61 ℃/s,almost full of martensite phase is obtained in 5301SH. However,1300WA has the similar effect when the Cu mass percent is greater than 2.0% and the cooling rate reaches 1.94 ℃/s.
作者
苏凤戈
郑卓
汪志荣
SU Feng-ge;ZHENG Zhuo;WANG Zhi-rong(Jiande Yitong Metal Powder Material Co.,Ltd.,Hangzhou 311613,China)
出处
《粉末冶金工业》
CAS
北大核心
2019年第1期73-79,共7页
Powder Metallurgy Industry
基金
建德市科技发展计划项目(建科[2016]13号)
关键词
水雾化
预合金粉末
低合金钢粉
烧结硬化
water atomization
pre-alloyed powder
low alloy steel powder
sinter hardening
