Solidification characteristics and segregation behavior of a P-containing Ni-Fe-Cr-based alloy
文献类型：期刊论文
| 作者 | Wang, Changshuai; Su, Haijun; Guo, YongAn; Guo, Jianting; Zhou, Lanzhang; Wang, CS; Zhou, LZ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China. |
| 刊名 | SPRINGER
 |
| 出版日期 | 2017-09-01 |
| 卷号 | 123期号:9页码:- |
| ISSN号 | 0947-8396 |
| 英文摘要 | Solidification characteristics and segregation behavior of a P-containing Ni-Fe-Cr-based alloy, considered as boiler and turbine materials in 700 degrees C advanced ultra-supercritical coal-fired power plants, have been investigated by differential thermal analysis and directional solidification quenching technique. Results reveal that P decreases the solidus temperature, but only has negligible influence on liquidus temperature. After P was added, the solidification sequence has no apparent change, but the width of the mushy zone increases and dendritic structures become coarser. Moreover, P increases the amount and changes the morphology of MC carbide. Energy-dispersive spectroscopy analysis reveals that P has obvious influence on the segregation behavior of the constitute elements with equilibrium partition coefficients (k(i)) far away from unity, whereas has negligible effect on the constituent elements with k(i) close to unity and has more influence on the final stage of solidification than at early stage. The distribution profiles reveal that P atoms pile up ahead of the solid/liquid (S/L) interface and strongly segregate to the interdendritic liquid region. The influence of P on solidification characteristics and segregation behavior of Ni-Fe-Cr-based alloy could be attributed to the accumulation of P ahead of the S/L interface during solidification.; Solidification characteristics and segregation behavior of a P-containing Ni-Fe-Cr-based alloy, considered as boiler and turbine materials in 700 degrees C advanced ultra-supercritical coal-fired power plants, have been investigated by differential thermal analysis and directional solidification quenching technique. Results reveal that P decreases the solidus temperature, but only has negligible influence on liquidus temperature. After P was added, the solidification sequence has no apparent change, but the width of the mushy zone increases and dendritic structures become coarser. Moreover, P increases the amount and changes the morphology of MC carbide. Energy-dispersive spectroscopy analysis reveals that P has obvious influence on the segregation behavior of the constitute elements with equilibrium partition coefficients (k(i)) far away from unity, whereas has negligible effect on the constituent elements with k(i) close to unity and has more influence on the final stage of solidification than at early stage. The distribution profiles reveal that P atoms pile up ahead of the solid/liquid (S/L) interface and strongly segregate to the interdendritic liquid region. The influence of P on solidification characteristics and segregation behavior of Ni-Fe-Cr-based alloy could be attributed to the accumulation of P ahead of the S/L interface during solidification. |
| 学科主题 | Materials Science, Multidisciplinary ; Physics, Applied |
| 语种 | 英语 |
| 资助机构 | National Energy Administration Program of China [NY20150102]; National Key Research and Development Program of China [2017YFB0305204]; National Natural Science Foundation of China [51301171]; Fund of the State Key Laboratory of Solidification Processing in NWPU [SKLSP201512]; Science and Technology Program of Sichuan Province [2016JZ0036] |
| 公开日期 | 2018-01-10 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79126]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wang, CS; Zhou, LZ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Wang, Changshuai,Su, Haijun,Guo, YongAn,et al. Solidification characteristics and segregation behavior of a P-containing Ni-Fe-Cr-based alloy[J]. SPRINGER,2017,123(9):-. |
| APA | Wang, Changshuai.,Su, Haijun.,Guo, YongAn.,Guo, Jianting.,Zhou, Lanzhang.,...&Zhou, LZ .(2017).Solidification characteristics and segregation behavior of a P-containing Ni-Fe-Cr-based alloy.SPRINGER,123(9),-. |
| MLA | Wang, Changshuai,et al."Solidification characteristics and segregation behavior of a P-containing Ni-Fe-Cr-based alloy".SPRINGER 123.9(2017):-. |
入库方式： OAI收割
来源：金属研究所
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