In Situ Observation of Kinetic Processes of Lath Bainite Nucleation and Growth by Laser Scanning Confocal Microscope in Reheated Weld Metals

doi:10.1007/s11661-017-4348-7

	In Situ Observation of Kinetic Processes of Lath Bainite Nucleation and Growth by Laser Scanning Confocal Microscope in Reheated Weld Metals
	Mao, Gaojun 1,2; Cao, Rui1,2 ; Guo, Xili 3; Jiang, Yong 3; Chen, Jianhong1,2
	2017-12
发表期刊	METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
ISSN	1073-5623
卷号	48A 期号:12 页码:5783-5798
摘要	The kinetic processes of nucleation and growth of bainite laths in reheated weld metals are observed and analyzed by a combination of a laser confocal scanning microscope and an electron backscattering diffraction with a field emission scanning electron microscope. The results indicate that the surface relief induced by phase transformation is able to reveal the real microstructural morphologies of bainite laths when viewed from various angles. Five nucleation modes and six types of growth behaviors of bainite laths are revealed. The bainite lath growth rates are measured to vary over a wide range, from 2 mu m/s to higher than 2000 mu m/s. The orientations of the bainite laths within a prior austenite grain are examined and denoted as different variants. On the basis of variant identification, the reason is analyzed for various growth rates which are demonstrated to be affected by (1) the density of the high-angle misorientation in it, (2) the included angle between habit planes of different variants, and (3) the direction of lath growth with respect to the free (polished) surface.
关键词	Backscattering Bainite Crystallization Nucleation Scanning Scanning electron microscopy Welds Electron backscattering diffraction Field emission scanning electron microscopes In-situ observations Laser Confocal Scanning microscopes Laser scanning confocal microscopes Microstructural morphology Nucleation and growth Prior austenite grains
DOI	10.1007/s11661-017-4348-7
收录类别	SCI ; SCIE
语种	英语
资助项目	National Nature Science Foundation of China[51675255]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000426864300005
出版者	SPRINGER
EI入藏号	20174204274776
EI主题词	Bainitic transformations
EI分类号	531.2 Metallography - 538.2 Welding - 802.3 Chemical Operations - 933.1.2 Crystal Growth
引用统计	被引频次：25[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/32990
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院材料科学与工程学院_特聘教授组
通讯作者	Chen, Jianhong
作者单位	1.Lanzhou Univ Technol, Dept Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China; 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China; 3.Atlantic China Welding Consumables Inc, Zigong 643000, Peoples R China
第一作者单位	兰州理工大学; 省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	兰州理工大学; 省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Mao, Gaojun,Cao, Rui,Guo, Xili,et al. In Situ Observation of Kinetic Processes of Lath Bainite Nucleation and Growth by Laser Scanning Confocal Microscope in Reheated Weld Metals[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2017,48A(12):5783-5798.
APA	Mao, Gaojun,Cao, Rui,Guo, Xili,Jiang, Yong,&Chen, Jianhong.(2017).In Situ Observation of Kinetic Processes of Lath Bainite Nucleation and Growth by Laser Scanning Confocal Microscope in Reheated Weld Metals.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,48A(12),5783-5798.
MLA	Mao, Gaojun,et al."In Situ Observation of Kinetic Processes of Lath Bainite Nucleation and Growth by Laser Scanning Confocal Microscope in Reheated Weld Metals".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 48A.12(2017):5783-5798.

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