{"title":"Effect of Thermal Barriers on the Martensitic Transformation in a Bar Jominy","authors":"D. Rezini, Touhami Baki","doi":"10.2478/scjme-2023-0028","DOIUrl":null,"url":null,"abstract":"Abstract The shape and geometry of a part influence the cooling behavior during a martensitic transformation; an experimental study carried out on a control Jominy bar was compared with other bars fitted with one, two, and three slots; the results show differences in hardness along the specimen, the hardness with a slit and more is greater than the hardness on a sample without a slit, this is valid on the cooled side of the specimen, the further away from the side cooled plus the difference is minimal; the study was completed with a simulation on bars with and without slits, the results of the temperature contours show an acceleration of the cooling on the cooled side of the bars provided with slits; far from the cooled face the influence of the slits is weak.","PeriodicalId":445896,"journal":{"name":"Strojnícky časopis - Journal of Mechanical Engineering","volume":"104 1","pages":"133 - 144"},"PeriodicalIF":0.0000,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Strojnícky časopis - Journal of Mechanical Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2478/scjme-2023-0028","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
Abstract The shape and geometry of a part influence the cooling behavior during a martensitic transformation; an experimental study carried out on a control Jominy bar was compared with other bars fitted with one, two, and three slots; the results show differences in hardness along the specimen, the hardness with a slit and more is greater than the hardness on a sample without a slit, this is valid on the cooled side of the specimen, the further away from the side cooled plus the difference is minimal; the study was completed with a simulation on bars with and without slits, the results of the temperature contours show an acceleration of the cooling on the cooled side of the bars provided with slits; far from the cooled face the influence of the slits is weak.
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