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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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アイテムのパーマリンク: https://hdl.handle.net/21.11116/0000-0001-BAD4-E 版のパーマリンク: https://hdl.handle.net/21.11116/0000-0001-BAD5-D
資料種別: 学術論文

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 作成者:
Gao, Guhui1, 著者           
Zhang, Han2, 3, 著者           
Gui, Xiaolu1, 著者           
Tan, Zhunli1, 著者           
Bai, Bingzhe1, 4, 著者           
Weng, Yuqing5, 6, 著者           
所属:
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              

内容説明

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キーワード: 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
 要旨: 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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言語: eng - English
 日付: 2015-12-01
 出版の状態: 出版
 ページ: -
 出版情報: -
 目次: -
 査読: 査読あり
 識別子（DOI, ISBNなど）: DOI: 10.1016/j.actamat.2015.08.071
BibTex参照ID: Gao201531
 学位: -

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出版物 1

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出版物名: Acta Materialia
  省略形 : Acta Mater.
種別: 学術雑誌
 著者・編者:
所属:
出版社, 出版地: Kidlington : Elsevier Science
ページ: - 巻号: 101 通巻号: - 開始・終了ページ: 31 - 39 識別子（ISBN, ISSN, DOIなど）: ISSN: 1359-6454
CoNE: https://pure.mpg.de/cone/journals/resource/954928603100