铸造2012，Vol.61Issue(5)：467-470,4.
气体含量及熔体热处理温度对K465高温合金初生MC碳化物形态的影响
Influence of Gas Content and Temperature of Melt Heat Treatment on Primary MC Carbide Morphology of K465 Superalloy
白雪峰 1刘健平 2韩欢1
作者信息
- 1. 中航工业沈阳黎明航空发动机(集团)有限责任公司,辽宁沈阳110043
- 2. 驻黎明公司军代表室,辽宁沈阳110043
- 折叠
摘要
Abstract
The K465 alloy was refined at different melt heat treatment temperature in vacuum melting furnace, and test bars were poured. The effect of gas content and melt heat treatment temperature on primary MC carbide morphology of K465 alloy was investigated. The results show that primary MC carbide morphology changed with the gas content, which includes O and N. At the same temperature, primary MC carbide morphology changed from skeleton to granular shape with increase of gas content. The effect of O on the precipitation morphology of primary MC carbide was different from that of N. N through the formation of TiN or Ti (C, N) acted as the nucleation site of MC carbide which affected the precipitation morphology of primary MC carbide, while O can reduce the dissolvability of N in melt and promote the formation of TiN or Ti (C, N). The trend of MC carbide morphology changing from skeleton to granular shape increased with increase of melt heat treatment temperature.关键词
K465合金/熔体热处理/氮/氧/气体含量/碳化物形态Key words
K465 alloy/ melt heat treatment/ nitrogen/ oxygen/ gas content/ carbide morphology分类
矿业与冶金引用本文复制引用
白雪峰,刘健平,韩欢..气体含量及熔体热处理温度对K465高温合金初生MC碳化物形态的影响[J].铸造,2012,61(5):467-470,4.
