摘要
对炼镁还原罐用低Ni型和高Ni型耐热钢进行多元合金化设计,试样的显微组织和力学性能检测结果表明:Mo、W、Nb、V等元素可形成碳、氮化合物并弥散分布于基体中,有效地提高了耐热钢室温和高温强度,同时较高的Ni含量对于减少高温δ相数量起到有益作用。通过对化学成分的计算和分析表明,高Ni型耐热钢对防止有害σ相的产生起到抑制作用。
The multiple alloying of low Ni type and high Ni type heat-resistant steel with reduction tank of smelting magnesium was designed in the paper. The examination of microradiology and detection of mechanical property indicated： the element of Mo, W, Nb and V etc can become the carbide and compound of nitrogen which dispersed in the matrix, which effectively increased the strength at room temperature and high-temperature of heat-resistant steel, and the same time the higher Ni content has beneficial function to reduce the quantities of δ phase in high-temperature. The calculation and analysis of chemical constitution indicated- high Ni type heat-resistant steel can effectively prevent from the harmful σ phase creating.
出处
《铸造》
EI
CAS
CSCD
北大核心
2007年第3期300-302,共3页
Foundry
基金
山西省自然科学基金项目(20031061)
关键词
还原罐
合金化
有害相
耐热钢
reduction tank
alloying
harmful phase
heat-resistant steel
