磷对IN718合金蠕变性能的影响  

EFFECT OF PHOSPHORUS ON THE CREEP BEHAVIOR OF IN718 ALLOY

作　　者：宋洪伟[1] 郭守仁[1] 卢德忠[1] 徐岩[1] 王玉兰[1] 胡壮麒[1] 

机构地区：[1]中国科学院金属研究所

出　　处：《材料研究学报》1999年第5期523-526,共4页Chinese Journal of Materials Research

摘　　要：研究了磷对ＩＮ７１８ 合金蠕变性能的影响． 结果表明， 磷显著提高蠕变抗力．磷对应力指数没有明显的影响，掺杂０．０２％ 磷使表观蠕变激活能由６７８ ．５ｋＪ／ｍｏｌ 提高至７４６．１ｋＪ／ｍｏｌ．磷的有益作用可能是通过抑制晶界扩散实现的．The effect of phosphorus on the creep behavior of IN718 alloy has been studied. The results showed that phosphorus significantly increases the creep resistance. Increasing phosphorus to 0.02% has no notable effect on the stress exponent but causes an increase of the apparent creep activation energy from 678.5kJ/mol to 746.1kJ/mol. It has been proposed that the beneficial effect of phosphorus arises from the suppression of the diffusion along grain boundaries.

关 键 词：IN718合金 磷 蠕变 高温合金 

分 类 号：TG132.32[一般工业技术—材料科学与工程] TG113.255[金属学及工艺—合金]