{"title":"High resolution autoradiography for revealing sulphur segregation at austenite grain boundaries","authors":"M. Tacikowski , P. Benaben, A. Kobylanski","doi":"10.1016/0026-0800(88)90027-4","DOIUrl":null,"url":null,"abstract":"<div><p>A high resolution autoradiography technique was applied to observe the evolution of sulphur (S) segregation level in a high-purity iron doped with carbon (C), about 30 ppm of S and/or aluminum (Al) and nitrogen (N). The sample radioactivity was 5.6 KBq (0.15 μ Ci) with an exposure time of about 3 wk. The alloys were annealed at 950°C or 1150°C and also deformed at 950°C (in the hot brittleness temperature region). The S segregation revealed on austenite grain boundaries is more pronounced on the deformed specimen containing AIN precipitates. A high S concentration was observed in cracked regions. At 1150°C, the segregation level is smaller. A specimen containing only S deformed at 950°C, exhibits S segregation on dynamically recrystallized boundaries.</p></div>","PeriodicalId":100918,"journal":{"name":"Metallography","volume":"21 3","pages":"Pages 317-326"},"PeriodicalIF":0.0000,"publicationDate":"1988-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0026-0800(88)90027-4","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metallography","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0026080088900274","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
A high resolution autoradiography technique was applied to observe the evolution of sulphur (S) segregation level in a high-purity iron doped with carbon (C), about 30 ppm of S and/or aluminum (Al) and nitrogen (N). The sample radioactivity was 5.6 KBq (0.15 μ Ci) with an exposure time of about 3 wk. The alloys were annealed at 950°C or 1150°C and also deformed at 950°C (in the hot brittleness temperature region). The S segregation revealed on austenite grain boundaries is more pronounced on the deformed specimen containing AIN precipitates. A high S concentration was observed in cracked regions. At 1150°C, the segregation level is smaller. A specimen containing only S deformed at 950°C, exhibits S segregation on dynamically recrystallized boundaries.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
