| P含量对Inconel 706合金凝固过程中（Laves＋γ）共晶反应的影响 |
| 其他题名 | EFFECTS OF P CONTENT ON（LAVES＋γ） EUTECTIC REACTION DURING INCONEL 706 ALLOY SOLIDIFICATION
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| 信昕; 黄爱华; 祁峰; 张伟红; 刘芳; 杨洪才; 孙文儒; 胡壮麒
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| 2010
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| 发表期刊 | 金属学报
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| ISSN | 0412-1961
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| 卷号 | 46.0期号:007页码:873-878 |
| 摘要 | 研究了P对Inconel 706合金元素偏析和铸态组织的影响.结果表明,P在合金凝固过程中显著地偏聚于剩余液相中,并促进Nb和Ti等元素的偏聚,从而促进富Nb的Laves相和富Ti的η-Ni3Ti相析出;含0.004%P（质量分数）的Inconel 706合金枝晶间析出细小的（Laves＋γ）共晶和少量针状η-Ni3Ti相;P含量超过0.016%以后,枝晶间析出块状Laves相,Laves相颗粒之间析出大量密集的η-Ni3Ti板条;此外,P含量由0.004%升高至0.016%,Laves相的初熔温度由1170—1180℃之间下降至1160—1170℃之间.分析认为,高度富集于剩余液相中的P强烈阻碍γ相的析出,因此,P含量增加使合金的终凝温度降低,而且导致合金的凝固结束反应由（Laves＋γ）共晶转化为先析出富P的Laves相再析出γ基体的离异共晶反应. |
| 其他摘要 | The effects of P on elemental segregation and as-cast microstructure in Inconel 706 alloy were investigated in this paper.The results showed that P was markedly enriched in residual liquid and enhanced the segregation of Nb and Ti,which promoted the precipitation of Nb-enriched Laves phase and Ti-enrichedη-Ni_3Ti phase.In the as-cast alloy doped with 0.004% P（mass fraction）,fine（Laves＋γ）eutectic and needle likeηphase were formed in interdendritic region.As the P dopant was higher than 0.016%,blocky Laves phase was formed and lathηparticles were precipitated among Laves particles.Moreover,with P increasing from 0.004%to 0.016%,the incipient melting-point was found to drop from 1170—1180℃to 1160—1170℃.In high P-doped alloys,the enrichment of P in the residual liquid was believed to hinder the solidification of 7 phase, as a result,the final solidification temperature was found to be decreased and the solidification was terminated by the solidification ofγphase prior to the formation of P-bearing Laves phase rather than forming the（Laves＋γ）eutectic. |
| 关键词 | Inconel
706合金
P含量
凝固组织
偏析
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| 收录类别 | CSCD
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| 语种 | 中文
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| CSCD记录号 | CSCD:3974251
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/149713
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| 专题 | 中国科学院金属研究所
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| 作者单位 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
信昕,黄爱华,祁峰,等. P含量对Inconel 706合金凝固过程中（Laves＋γ）共晶反应的影响[J]. 金属学报,2010,46.0(007):873-878.
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| APA |
信昕.,黄爱华.,祁峰.,张伟红.,刘芳.,...&胡壮麒.(2010).P含量对Inconel 706合金凝固过程中（Laves＋γ）共晶反应的影响.金属学报,46.0(007),873-878.
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| MLA |
信昕,et al."P含量对Inconel 706合金凝固过程中（Laves＋γ）共晶反应的影响".金属学报 46.0.007(2010):873-878.
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