Z. Lin, L. Jin, J. Chen, L. Chen, Y. Zheng, F. Tu, X. Zhu, X. Wu, Y. Cao
{"title":"揭示三种热处理工艺中球墨铸铁的强度和韧性机理 探究三种热处理工艺中球墨铸铁的强度和韧性机理","authors":"Z. Lin, L. Jin, J. Chen, L. Chen, Y. Zheng, F. Tu, X. Zhu, X. Wu, Y. Cao","doi":"10.1002/mawe.202300210","DOIUrl":null,"url":null,"abstract":"<p>Microstructural characteristics and mechanical properties of the ductile iron in three heat treatment processes (normalizing, quenching + high-temperature tempering and isothermal quenching) were investigated in this paper. The pearlite and ferrite with large-sized spherical graphites can be obtained in the normalized sample, and the spherical graphites with relatively large size can still be observed in the mechanical mixture of tempered martensite and acicular ferrite for the quenched-tempered sample. Meanwhile, the lower bainite accompanied with the relatively fine spherical graphites are existed in the isothermal-quenched sample. The difference of tensile strength is mainly caused by the phase composition, distribution and size of the spherical graphites and the effect of the solid solution strengthening. The weaker degree of the debonding damage, higher proportion of high-angle grain boundaries will improve the impact toughness of the ductile iron. In a word, the optimum combination of strength and toughness is acquired by using isothermal quenching, and the tensile strength and impact toughness are ~1350 MPa and ~10.62 J, respectively.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":null,"pages":null},"PeriodicalIF":1.2000,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Revealing the strength and toughness mechanisms of ductile iron in three heat-treatment processes\\n Untersuchung der Festigkeits- und Zähigkeitsmechanismen von duktilem Eisen in drei Wärmebehandlungsverfahren\",\"authors\":\"Z. Lin, L. Jin, J. Chen, L. Chen, Y. Zheng, F. Tu, X. Zhu, X. Wu, Y. Cao\",\"doi\":\"10.1002/mawe.202300210\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Microstructural characteristics and mechanical properties of the ductile iron in three heat treatment processes (normalizing, quenching + high-temperature tempering and isothermal quenching) were investigated in this paper. The pearlite and ferrite with large-sized spherical graphites can be obtained in the normalized sample, and the spherical graphites with relatively large size can still be observed in the mechanical mixture of tempered martensite and acicular ferrite for the quenched-tempered sample. Meanwhile, the lower bainite accompanied with the relatively fine spherical graphites are existed in the isothermal-quenched sample. The difference of tensile strength is mainly caused by the phase composition, distribution and size of the spherical graphites and the effect of the solid solution strengthening. The weaker degree of the debonding damage, higher proportion of high-angle grain boundaries will improve the impact toughness of the ductile iron. In a word, the optimum combination of strength and toughness is acquired by using isothermal quenching, and the tensile strength and impact toughness are ~1350 MPa and ~10.62 J, respectively.</p>\",\"PeriodicalId\":18366,\"journal\":{\"name\":\"Materialwissenschaft und Werkstofftechnik\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.2000,\"publicationDate\":\"2024-04-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materialwissenschaft und Werkstofftechnik\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/mawe.202300210\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materialwissenschaft und Werkstofftechnik","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/mawe.202300210","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Revealing the strength and toughness mechanisms of ductile iron in three heat-treatment processes
Untersuchung der Festigkeits- und Zähigkeitsmechanismen von duktilem Eisen in drei Wärmebehandlungsverfahren
Microstructural characteristics and mechanical properties of the ductile iron in three heat treatment processes (normalizing, quenching + high-temperature tempering and isothermal quenching) were investigated in this paper. The pearlite and ferrite with large-sized spherical graphites can be obtained in the normalized sample, and the spherical graphites with relatively large size can still be observed in the mechanical mixture of tempered martensite and acicular ferrite for the quenched-tempered sample. Meanwhile, the lower bainite accompanied with the relatively fine spherical graphites are existed in the isothermal-quenched sample. The difference of tensile strength is mainly caused by the phase composition, distribution and size of the spherical graphites and the effect of the solid solution strengthening. The weaker degree of the debonding damage, higher proportion of high-angle grain boundaries will improve the impact toughness of the ductile iron. In a word, the optimum combination of strength and toughness is acquired by using isothermal quenching, and the tensile strength and impact toughness are ~1350 MPa and ~10.62 J, respectively.
期刊介绍:
Materialwissenschaft und Werkstofftechnik provides fundamental and practical information for those concerned with materials development, manufacture, and testing.
Both technical and economic aspects are taken into consideration in order to facilitate choice of the material that best suits the purpose at hand. Review articles summarize new developments and offer fresh insight into the various aspects of the discipline.
Recent results regarding material selection, use and testing are described in original articles, which also deal with failure treatment and investigation. Abstracts of new publications from other journals as well as lectures presented at meetings and reports about forthcoming events round off the journal.