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dc.contributor.authorS. Imuraien_US
dc.contributor.authorC. Thanachayanonten_US
dc.contributor.authorJ. T.H. Pearceen_US
dc.contributor.authorK. Tsudaen_US
dc.contributor.authorT. Chairuangsrien_US
dc.date.accessioned2018-09-04T09:50:28Z-
dc.date.available2018-09-04T09:50:28Z-
dc.date.issued2014-04-01en_US
dc.identifier.issn10445803en_US
dc.identifier.other2-s2.0-84894040313en_US
dc.identifier.other10.1016/j.matchar.2014.01.014en_US
dc.identifier.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84894040313&origin=inwarden_US
dc.identifier.urihttp://cmuir.cmu.ac.th/jspui/handle/6653943832/53500-
dc.description.abstractMicrostructures of as-cast 28 wt.% Cr-2.6 wt.% C irons containing (0-10) wt.% Mo with the Cr/C ratio of about 10 were studied and related to hardness. The experimental irons were cast into dry sand molds. Microstructural investigation was performed by light microscopy, X-ray diffractometry, scanning electron microscopy, transmission electron microscopy and energy-dispersive X-ray spectrometry. It was found that the iron with about 10 wt.% Mo was eutectic/peritectic, whereas the others with less Mo content were hypoeutectic. The matrix in all irons was austenite, partly transformed to martensite during cooling. Mo addition promoted the formation of M23C6and M6C. At 1 wt.% Mo, multiple eutectic carbides including M7C3, M23C6and M6C were observed. M23C6existed as a transition zone between eutectic M7C3and M6C, indicating a carbide transition as M7C3(M2.3C) → M23C6(M3.8C) → M6C. At 6 wt.% Mo, multiple eutectic carbides including M7C3and M23C6were observed together with fine cellular/lamellar M6C aggregates. In the iron with 10 wt.% Mo, only eutectic/peritectic M23C6and M6C were found without M7C3. Mo distribution to all carbides has been determined to be increased from ca. 0.4 to 0.7 in mass fraction as the Mo content in the irons was increased. On the other hand, Cr distribution to all carbides is quite constant as ca. 0.6 in mass fraction. Mo addition increased Vickers macro-hardness of the irons from 495 up to 674 HV30. High Mo content as solid-solution in the matrix and the formation of M6C or M23C6aggregates were the main reasons for hardness increase, indicating potentially improved wear performance of the irons with Mo addition. © 2014 Elsevier Inc.en_US
dc.subjectEngineeringen_US
dc.subjectMaterials Scienceen_US
dc.subjectPhysics and Astronomyen_US
dc.titleEffects of Mo on microstructure of as-cast 28 wt.% Cr-2.6 wt.% C-(0-10) wt.% Mo ironsen_US
dc.typeJournalen_US
article.title.sourcetitleMaterials Characterizationen_US
article.volume90en_US
article.stream.affiliationsChiang Mai Universityen_US
article.stream.affiliationsThailand National Metal and Materials Technology Centeren_US
article.stream.affiliationsTohoku Universityen_US
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