{"title":"Formation of Cracks during Thermal Treatment of Martensite-Bainite Steel Parts","authors":"D. I. Lebedev, M. V. Maisuradze, E. V. Antakov","doi":"10.3103/s0967091224700347","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In this paper, we study the causes of crack formation after thermal treatment of alloyed steel parts with high resistance of overcooled austenite. A thermokinetic diagram of transformations of overcooled austenite during continuous cooling is plotted using the dilatometric method, and the temperature-time intervals for the occurrence of transformations are established. The hydrogen content in the melts of the studied steel is determined. The distribution of microstructure and hardness over the cross section of the part is analyzed. Computational modeling of the processes occurring during thermal treatment of parts is performed. Atomic emission spectral analysis reveals the presence of significant liquation of carbon in the axial zone that leads to a decrease in the temperature of the onset of martensitic transformation in the core of the part.</p>","PeriodicalId":21903,"journal":{"name":"Steel in Translation","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Steel in Translation","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3103/s0967091224700347","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Materials Science","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper, we study the causes of crack formation after thermal treatment of alloyed steel parts with high resistance of overcooled austenite. A thermokinetic diagram of transformations of overcooled austenite during continuous cooling is plotted using the dilatometric method, and the temperature-time intervals for the occurrence of transformations are established. The hydrogen content in the melts of the studied steel is determined. The distribution of microstructure and hardness over the cross section of the part is analyzed. Computational modeling of the processes occurring during thermal treatment of parts is performed. Atomic emission spectral analysis reveals the presence of significant liquation of carbon in the axial zone that leads to a decrease in the temperature of the onset of martensitic transformation in the core of the part.
期刊介绍：
Steel in Translation is a journal that represents a selection of translated articles from two Russian metallurgical journals: Stal’ and Izvestiya Vysshikh Uchebnykh Zavedenii. Chernaya Metallurgiya . Steel in Translation covers new developments in blast furnaces, steelmaking, rolled products, tubes, and metal manufacturing as well as unconventional methods of metallurgy and conservation of resources. Papers in materials science and relevant commercial applications make up a considerable portion of the journal’s contents. There is an emphasis on metal quality and cost effectiveness of metal production and treatment.
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