| 硫对IN718合金蠕变性能的影响 |
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| 引用本文： | 宋洪伟,郭守仁,胡壮麒.硫对IN718合金蠕变性能的影响[J].航空材料学报,1999,19(1):0. |
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| 作者姓名： | 宋洪伟 郭守仁 胡壮麒 |
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| 作者单位： | 中国科学院金属研究所,沈阳,110015 |
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| 摘 要： | 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
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| 关 键 词： | IN718合金 硫 蠕变 晶界扩散 |
| 文章编号： | 1005-5053(1999)01-0013-04 |
| 修稿时间： | 1998-11-30 |
Effect of sulfur on creep behavior of IN718 alloy |
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| SONG Hong-wei,GUO Shou-ren,HU Zhuang-qi.Effect of sulfur on creep behavior of IN718 alloy[J].Journal of Aeronautical Materials,1999,19(1):0. |
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| Authors: | SONG Hong-wei GUO Shou-ren HU Zhuang-qi |
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| Abstract: | The effect of sulfur on the creep behavior of IN718 alloy has been investigated.The results show that sulfur decreases the creep resistance of IN718 alloy.Increasing sulfur content to 0.02wt% causes a reduction of the aparent creep activation energy from 678.5kJ/mol to 634.8kJ/mol.The harmful effect mainly arises from the enhanced diffusion along grain boundary by sulfur. |
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| Keywords: | IN718 alloy sulfur creep grain boundary diffusion |
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