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Article: Micro-segregation and Precipitation of Alloy 690 during Isothermal Solidification: The Role of Nitrogen Content
Title | Micro-segregation and Precipitation of Alloy 690 during Isothermal Solidification: The Role of Nitrogen Content |
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Authors | |
Keywords | Nitrogen content Micro-segregation Solidification Precipitate Alloy 690 |
Issue Date | 2012 |
Citation | Journal of Materials Science and Technology, 2012, v. 28, n. 5, p. 446-452 How to Cite? |
Abstract | The segregation and precipitation behavior of Alloy 690 containing 0.001-0.11 wt% nitrogen during isothermal solidification at 1370 and 1355 °C have been investigated using optical microscopy (OM), electron probe microanalysis (EPMA) and transmission electron microscopy (TEM). The results indicate that the volume fraction of TiN-type nitride formed during isothermal solidification increases with the nitrogen content of Alloy 690. Segregation of Ti and Cr exists in samples solidified at 1370 and 1355 °C. The Ti content in the residual liquid markedly decreases and the concentration of Cr increases when the nitrogen content of Alloy 690 increases. Furthermore, N and S also show segregation to some extent in the residual liquids at 1355 °C. Accompanying by the segregation of Cr, Ti, C, N and S, sulfides and chromium nitrides form. In a low nitrogen content Alloy 690, sulfur segregates and precipitates in the form of Ti4C2S2and (Cr, Ti)S, but in the form of (Cr, Ti)S or CrS in a high nitrogen content Alloy 690. (Cr, Ti)N-type nitrides with an fcc crystal structure have been identified in a sample with 0.11 wt% nitrogen. © 2012 The Chinese Society for Metals. |
Persistent Identifier | http://hdl.handle.net/10722/265487 |
ISSN | 2023 Impact Factor: 11.2 2023 SCImago Journal Rankings: 2.309 |
DC Field | Value | Language |
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dc.contributor.author | Jiang, Rong | - |
dc.contributor.author | Chen, Bo | - |
dc.contributor.author | Hao, Xianchao | - |
dc.contributor.author | Ma, Yingche | - |
dc.contributor.author | Li, Shuo | - |
dc.contributor.author | Liu, Kui | - |
dc.date.accessioned | 2018-12-03T01:20:48Z | - |
dc.date.available | 2018-12-03T01:20:48Z | - |
dc.date.issued | 2012 | - |
dc.identifier.citation | Journal of Materials Science and Technology, 2012, v. 28, n. 5, p. 446-452 | - |
dc.identifier.issn | 1005-0302 | - |
dc.identifier.uri | http://hdl.handle.net/10722/265487 | - |
dc.description.abstract | The segregation and precipitation behavior of Alloy 690 containing 0.001-0.11 wt% nitrogen during isothermal solidification at 1370 and 1355 °C have been investigated using optical microscopy (OM), electron probe microanalysis (EPMA) and transmission electron microscopy (TEM). The results indicate that the volume fraction of TiN-type nitride formed during isothermal solidification increases with the nitrogen content of Alloy 690. Segregation of Ti and Cr exists in samples solidified at 1370 and 1355 °C. The Ti content in the residual liquid markedly decreases and the concentration of Cr increases when the nitrogen content of Alloy 690 increases. Furthermore, N and S also show segregation to some extent in the residual liquids at 1355 °C. Accompanying by the segregation of Cr, Ti, C, N and S, sulfides and chromium nitrides form. In a low nitrogen content Alloy 690, sulfur segregates and precipitates in the form of Ti4C2S2and (Cr, Ti)S, but in the form of (Cr, Ti)S or CrS in a high nitrogen content Alloy 690. (Cr, Ti)N-type nitrides with an fcc crystal structure have been identified in a sample with 0.11 wt% nitrogen. © 2012 The Chinese Society for Metals. | - |
dc.language | eng | - |
dc.relation.ispartof | Journal of Materials Science and Technology | - |
dc.subject | Nitrogen content | - |
dc.subject | Micro-segregation | - |
dc.subject | Solidification | - |
dc.subject | Precipitate | - |
dc.subject | Alloy 690 | - |
dc.title | Micro-segregation and Precipitation of Alloy 690 during Isothermal Solidification: The Role of Nitrogen Content | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/S1005-0302(12)60081-4 | - |
dc.identifier.scopus | eid_2-s2.0-84862327708 | - |
dc.identifier.volume | 28 | - |
dc.identifier.issue | 5 | - |
dc.identifier.spage | 446 | - |
dc.identifier.epage | 452 | - |
dc.identifier.issnl | 1005-0302 | - |