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研究了常规和掺杂０．０２ｗｔ％硫的ＩＮ７１８合金的蠕变行为。结果表明，硫降低ＩＮ７１８合金的蠕变抗力，使表观蠕变激活能由６７８．５ｋＪ／ｍｏｌ减小到６３４．８ｋＪ／ｍｏｌ。计算表明，硫的危害主要来源于其对晶界扩散的促进作用
The creep behavior of IN718 alloy with conventional and 0.02wt% sulfur doping was investigated. The results show that sulfur reduces the creep resistance of IN718 alloy and decreases the apparent creep activation energy from 678.5 kJ / mol to 634.8 kJ / mol. Calculations show that the harm of sulfur comes mainly from its promotion of grain boundary diffusion