AdvancesinCondensedMatterPhysics凝聚态物理学进展,2023,12(3),65-71PublishedOnlineAugust2023inHans.https://www.hanspub.org/journal/cmphttps://doi.org/10.12677/cmp.2023.123008文章引用:余楚豪,王瑞龙.Ni44Mn45Sn10.5Al0.5合金的中间马氏体相变研究[J].凝聚态物理学进展,2023,12(3):65-71.DOI:10.12677/cmp.2023.123008Ni44Mn45Sn10.5Al0.5合金的中间马氏体相变研究余楚豪,王瑞龙*湖北大学,物理学院,湖北武汉收稿日期:2023年5月6日;录用日期:2023年8月9日;发布日期:2023年8月16日摘要利用电弧熔炼的方法制备了Al掺杂的Ni44Mn45Sn10.5Al0.5哈斯勒合金样品。磁性测量结果表明,随温度降低样品表现出奥氏体A至马氏体M1、马氏体M1至马氏体M2的分步磁相变;随着外加磁场的升高,奥氏体相的磁矩逐渐增大,在高磁场下,依然表现为分步磁相变,说明该合金样品的中间马氏体相变非常稳定。在50kOe的外加磁场下,整个相变过程中产生的最大磁熵变为9.66J·kg−1·K−1,表明该合金样品具有一定的磁制冷能力。以上结果对我们深入认识Ni-Mn-Sn合金的磁热效应以及中间马氏体相变的过程提供了良好基础。关键词哈斯勒合金,马氏体相变,中间马氏体相变,磁热效应IntermartensiticTransformationofNi44Mn45Sn10.5Al0.5AlloyChuhaoYu,RuilongWang*SchoolofPhysics,HubeiUniversity,WuhanHubeiReceived:May6th,2023;accepted:Aug.9th,2023;published:Aug.16th,2023AbstractTheAl-dopedNi44Mn45Sn10.5Al0.5Hassleralloysampleswerepreparedbyarcmeltingmethod.ThemagneticmeasurementresultsshowthatthesamplesexhibitastepwisemagnetictransformationfromausteniteAtomartensiteM1,andfrommartensiteM1tomartensiteM2withdecreasingtem-perature;Withtheincreaseofthemagneticfield,themagneticmomentoftheaustenitephasegraduallyincreases.Underthehighmagneticfield,itstillshowsastepwisemagnetictransforma-*通讯作者。余楚豪,王瑞龙DOI:10.12677/cmp.2023.12300866凝聚态物理学进展tion,indicatingthattheintermartensitetransformationofthealloysampleisverystable.Underthemagneticfieldof50kOe,themaximummagneticentropygeneratedduringthewholephasetransformationprocessis9.66J·kg−1·K−1,indicatingthatthealloysamplehasacertainmagneticrefrigerationability.Theaboveresultsprovideagoodbasisforustodeeplyunderstandthemag-neto...