Mechanism of Dynamic Formation of Ultrafine Ferrite Grains during High Temperature Processing in Steel

IMR OpenIR

	Mechanism of Dynamic Formation of Ultrafine Ferrite Grains during High Temperature Processing in Steel
	Zhao, Lijia; Park, Nokeun; Tian, Yanzhong; Shibata, Akinobu; Tsuji, Nobuhiro; Zhao, LJ (reprint author), Kyoto Univ, Dept Mat Sci & Engn, Sakyo Ku, Yoshida Honmachi, Kyoto 6068501, Japan.; Zhao, LJ (reprint author), Colorado Sch Mines, Dept Met & Mat Engn, Adv Steel Proc & Prod Res Ctr, Golden, CO 80401 USA.
	2017-03-01
发表期刊	ADVANCED ENGINEERING MATERIALS
ISSN	1438-1656
卷号	19 期号:3 页码:-
摘要	The grain refinement mechanism of ferrite dynamically transformed (DT) from austenite is investigated in a 10Ni-0.1C steel. For decades, it has been debated whether dynamic recrystallization (DRX) contributes to the grain refinement of DT ferrite. Here, the authors show that the role of DRX has been previously underestimated in grain refinement of ferrite and intrinsically it is the DRX that leads to ultra grain refinement of DT ferrite. The DT ferrite shows an unconventional grain growth behavior, that is, grain coarsening at an early stage of transformation with subsequent grain refinement by DRX, which strongly depends on the strain rate. The high strain concentration on fine ferrite grains within the austenite+ferrite structure produced by DT mainly contributes to the occurrence of DRX to form ultrafine-grained ferrite structures.; The grain refinement mechanism of ferrite dynamically transformed (DT) from austenite is investigated in a 10Ni-0.1C steel. For decades, it has been debated whether dynamic recrystallization (DRX) contributes to the grain refinement of DT ferrite. Here, the authors show that the role of DRX has been previously underestimated in grain refinement of ferrite and intrinsically it is the DRX that leads to ultra grain refinement of DT ferrite. The DT ferrite shows an unconventional grain growth behavior, that is, grain coarsening at an early stage of transformation with subsequent grain refinement by DRX, which strongly depends on the strain rate. The high strain concentration on fine ferrite grains within the austenite+ferrite structure produced by DT mainly contributes to the occurrence of DRX to form ultrafine-grained ferrite structures.
部门归属	[zhao, lijia ; park, nokeun ; tian, yanzhong ; shibata, akinobu ; tsuji, nobuhiro] kyoto univ, dept mat sci & engn, sakyo ku, yoshida honmachi, kyoto 6068501, japan ; [zhao, lijia] colorado sch mines, dept met & mat engn, adv steel proc & prod res ctr, golden, co 80401 usa ; [park, nokeun] yeungnam univ, sch mat sci & engn, gyongsan 712749, south korea ; [tian, yanzhong] chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china ; [tian, yanzhong ; shibata, akinobu ; tsuji, nobuhiro] kyoto univ, elements strategy initiat struct mat esism, sakyo ku, yoshida honmachi, kyoto 6068501, japan
学科领域	Materials Science, Multidisciplinary
资助者	Elements Strategy Initiative for Structural Materials (ESISM), all through the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan [15H05767, 26630365]; China Scholarship Council [2011608007]
收录类别	SCI
语种	英语
WOS记录号	WOS:000397493400023
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/78251
专题	中国科学院金属研究所
通讯作者	Zhao, LJ (reprint author), Kyoto Univ, Dept Mat Sci & Engn, Sakyo Ku, Yoshida Honmachi, Kyoto 6068501, Japan.; Zhao, LJ (reprint author), Colorado Sch Mines, Dept Met & Mat Engn, Adv Steel Proc & Prod Res Ctr, Golden, CO 80401 USA.
推荐引用方式 GB/T 7714	Zhao, Lijia,Park, Nokeun,Tian, Yanzhong,et al. Mechanism of Dynamic Formation of Ultrafine Ferrite Grains during High Temperature Processing in Steel[J]. ADVANCED ENGINEERING MATERIALS,2017,19(3):-.
APA	Zhao, Lijia.,Park, Nokeun.,Tian, Yanzhong.,Shibata, Akinobu.,Tsuji, Nobuhiro.,...&Zhao, LJ .(2017).Mechanism of Dynamic Formation of Ultrafine Ferrite Grains during High Temperature Processing in Steel.ADVANCED ENGINEERING MATERIALS,19(3),-.
MLA	Zhao, Lijia,et al."Mechanism of Dynamic Formation of Ultrafine Ferrite Grains during High Temperature Processing in Steel".ADVANCED ENGINEERING MATERIALS 19.3(2017):-.