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  Enhanced strain hardening capacity in a lean alloy steel treated by a "disturbed" bainitic austempering process

Gao, G., Zhang, H., Gui, X., Tan, Z., Bai, B., & Weng, Y. (2015). Enhanced strain hardening capacity in a lean alloy steel treated by a "disturbed" bainitic austempering process. Acta Materialia, 101, 31-39. doi:10.1016/j.actamat.2015.08.071.

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-0001-BAD4-E Versions-Permalink: https://hdl.handle.net/21.11116/0000-0001-BAD5-D
Genre: Zeitschriftenartikel

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 Urheber:
Gao, Guhui1, Autor           
Zhang, Han2, 3, Autor           
Gui, Xiaolu1, Autor           
Tan, Zhunli1, Autor           
Bai, Bingzhe1, 4, Autor           
Weng, Yuqing5, 6, Autor           
Affiliations:
1Materials Science and Engineering Research Center, Beijing Jiaotong University, Beijing, China, ou_persistent22              
2Material Science & Engineering Research Center, School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing, China, persistent22              
3Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863381              
4Key Laboratory of Advanced Materials, Department of Material Science and Engineering, Tsinghua University, Beijing, China, ou_persistent22              
5Beijing Jiaotong University, Mat. Sci. and Eng. Res. Center, Beijing, China, persistent22              
6Tsinghua University, Key Lab. Adv. Mat., Sch. Mat. Sci. and Eng., Beijing, China, persistent22              

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Schlagwörter: Alloy steel; Austenite; Bainite; Hardening; Manganese; Martensitic steel; Mechanical properties; Plasticity; Quenching; Strain hardening, Austempering process; Low alloyed steels; Quenching and partitioning; Retained austenite; Strain-hardening capacity; Strength and ductilities; Transformation induced plasticity; Twinning-induced plasticities, Bainitic transformations
 Zusammenfassung: A "disturbed" bainitic austempering process (isothermal bainitic transformation in conjunction with quenching and partitioning) was employed in a Mn-Si-Cr-C low-alloyed steel to reduce the fraction and size of the blocky martensite/austenite (M/A) islands. The M/A islands formed during the conventional bainitic austempering process are coarse and undesirable for property optimization. Owing to the novel heat treatment, the strain hardening capacity of the steel is improved remarkably, leading to an excellent combination of strength and ductility (e.g. ultimate strength: 1515 MPa; total elongation: 31.2). The improvement of mechanical properties is attributed to both the transformation induced plasticity (TRIP) and twinning induced plasticity (TWIP) effects provided by the refined filmy austenite constituent. © 2015 Acta Materialia Inc.

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Sprache(n): eng - English
 Datum: 2015-12-01
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1016/j.actamat.2015.08.071
BibTex Citekey: Gao201531
 Art des Abschluß: -

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Titel: Acta Materialia
  Kurztitel : Acta Mater.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Kidlington : Elsevier Science
Seiten: - Band / Heft: 101 Artikelnummer: - Start- / Endseite: 31 - 39 Identifikator: ISSN: 1359-6454
CoNE: https://pure.mpg.de/cone/journals/resource/954928603100