Hot Ductility of DSS and Its Microstructure Observation During Hot Deformation

By selecting several typical duplex stainless steels （DSS）, i. e. , 00Cr22NiSMo3N, 00Cr21Ni2MnSN and 00Cr25NiTMo4N, as research materials, hot ductility characteristic of DSS was studied by thermal simulation meth-od and microstructure evolution during hot compression was observed through TEM. The r...

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Veröffentlicht in:	Journal of iron and steel research, international international, 2013-08, Vol.20 (8), p.83-86
Hauptverfasser:	Song, Zhi-gang, Zheng, Wen-jie, Feng, Han, Wu, Zhong-zhong, Guo, Hai-sheng, Yu, Fei
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied and Technical Physics DSS Ductility Duplex stainless steels Dynamic recrystallization Dynamics Engineering Ferrite Hot pressing Iron and steel industry Machines Manufacturing Materials Engineering Materials Science Metallic Materials Microstructure Nickel chromium molybdenum steels Physical Chemistry Processes Recovery Stainless steels Steels 双相不锈钢延展性热变形电子显微镜观察组织演变组织观察高温塑性
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Zusammenfassung:	By selecting several typical duplex stainless steels （DSS）, i. e. , 00Cr22NiSMo3N, 00Cr21Ni2MnSN and 00Cr25NiTMo4N, as research materials, hot ductility characteristic of DSS was studied by thermal simulation meth-od and microstructure evolution during hot compression was observed through TEM. The results show that the opti-mum hot ductility temperature range of DSS is 1050-1200 ℃. 00Cr25NiTMo4N exhibits the worst hot ductility and 00Cr21Ni2MnSN has similar hot ductility to 00Cr22Ni5Mo3N. During hot compression, the dynamic recovery of austenite occurs in DSS while the dynamic recovery and recrystallization of ferrite take place in 00Cr22NiSMo3N and 00Cr21Ni2MnSN, but only the dynamic recovery of ferrite can be observed in 00Cr25Ni7Mo4N.
ISSN:	1006-706X 2210-3988
DOI:	10.1016/S1006-706X(13)60146-6