DC Field | Value | Language |
---|---|---|
dc.contributor.author | Farvizi, M. | - |
dc.contributor.author | Javan, M. Kahkhaei | - |
dc.contributor.author | Akbarpour, M. R. | - |
dc.contributor.author | Kim, H. S. | - |
dc.date.accessioned | 2019-04-07T16:52:11Z | - |
dc.date.available | 2019-04-07T16:52:11Z | - |
dc.date.created | 2018-10-10 | - |
dc.date.issued | 2018-09 | - |
dc.identifier.issn | 0272-8842 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/95666 | - |
dc.description.abstract | To escape the detrimental effect of NiTi matrix decomposition on hot-isostatic-pressing (HIP)-processed NiTi-nano alumina composites, which leads to the formation of NiTi2/Ni3Ti intermetallics; in this study, spark plasma sintering (SPS) was utilized to restrict this phenomenon in NiTi and NiTi-6 wt% nano alumina composites. After optimization of the SPS processing conditions, the microstructural aspects of the SPS and HIP-consolidated samples were compared. According to X-ray diffraction analysis, the SPS-processed composites contained more B2-NiTi phase than the HIP-processed samples did. This is because of lower NiTi matrix decomposition due to formation of NiTi2/Ni3Ti phases. Scanning electron microscopy studies revealed that at the interface of alumina and the NiTi matrix, Ti-rich phases had evolved, while in the grain interiors, matrix decomposition mostly led to the formation of Ni-rich intermetallics. High-resolution transmission electron microscopy investigations confirmed an increased Ni/Ti ratio in the austenitic NiTi matrix in the vicinity of the Ti-rich phases, and the formation of martensitic NiTi near the Ni-rich phases. The results from differential scanning calorimetry indicated that the latent heat of martensitic transformation in the SPS composite is higher than that of HIP-processed composite samples due to lower matrix decomposition and higher NiTi phase, which can participate in martensitic transformation. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCI LTD | - |
dc.relation.isPartOf | CERAMICS INTERNATIONAL | - |
dc.title | Fabrication of NiTi and NiTi-nano Al2O3 composites by powder metallurgy methods: Comparison of hot isostatic pressing and spark plasma sintering techniques | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.ceramint.2018.06.025 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | CERAMICS INTERNATIONAL, v.44, no.13, pp.15981 - 15988 | - |
dc.identifier.wosid | 000442057800140 | - |
dc.citation.endPage | 15988 | - |
dc.citation.number | 13 | - |
dc.citation.startPage | 15981 | - |
dc.citation.title | CERAMICS INTERNATIONAL | - |
dc.citation.volume | 44 | - |
dc.contributor.affiliatedAuthor | Kim, H. S. | - |
dc.identifier.scopusid | 2-s2.0-85048589271 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | SHAPE-MEMORY ALLOY | - |
dc.subject.keywordPlus | WEAR BEHAVIOR | - |
dc.subject.keywordPlus | TINI ALLOY | - |
dc.subject.keywordPlus | MICROSTRUCTURE | - |
dc.subject.keywordPlus | TRANSFORMATION | - |
dc.subject.keywordAuthor | NiTi | - |
dc.subject.keywordAuthor | Nano alumina | - |
dc.subject.keywordAuthor | Spark plasma sintering (SPS) | - |
dc.subject.keywordAuthor | Hot isostatic pressing (HIP) | - |
dc.subject.keywordAuthor | Microstructure | - |
dc.subject.keywordAuthor | Martensitic transformation | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Ceramics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
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