| P含量对Inconel 706合金凝固过程中（Laves＋γ）共晶反应的影响 | |
| Alternative Title | EFFECTS OF P CONTENT ON（LAVES＋γ） EUTECTIC REACTION DURING INCONEL 706 ALLOY SOLIDIFICATION |
| 信昕; 黄爱华; 祁峰; 张伟红; 刘芳; 杨洪才; 孙文儒; 胡壮麒 | |
| 2010 | |
| Source Publication | 金属学报
 |
| ISSN | 0412-1961 |
| Volume | 46.0Issue:007Pages:873-878 |
| Abstract | 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. |
| Other Abstract | 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. |
| Keyword | Inconel 706合金 P含量 凝固组织 偏析 |
| Indexed By | CSCD |
| Language | 中文 |
| CSCD ID | CSCD:3974251 |
| Citation statistics |
Cited Times:2[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/149713 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 中国科学院金属研究所 |
| Recommended Citation 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. |
| 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. |
| 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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