Microstructure characteristics and mechanical properties of deposited metals with different types of bainite

doi:10.1016/j.jmrt.2023.01.064

IMR OpenIR

	Microstructure characteristics and mechanical properties of deposited metals with different types of bainite
	Liu, Jingwu 1,2; Wei, Shitong 1; Sun, Qishan 1,2; Liu, Chenghao 1,2; Lu, Shanping 1
通讯作者	Lu, Shanping(shplu@imr.ac.cn)
	2023
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	23 页码:744-755
摘要	In this work, three types of bainite microstructure have been gained in the deposited metals by adjusting the Ni content (1 wt %, 2.5 wt %, and 4 wt %). The microstructure feature of different types of bainite has been characterized by optical microscope, scanning electron microscope, transmission electron microscope, and electron backscattering diffraction. Microstructure changed from granular bainite with different morphology to lath bainite with the increase of Ni content. The number of elongated Martensite-Austenite constituents in granular bainite increased with the increasing Ni content from 1 wt % to 2.5 wt % due to the increase in hardenability. The complex orientation in the deposited metal with 4 wt % Ni content attributed to the numerous autocatalytic nucleation occur-rence during the bainite transformation. After crystallographic characterization, the bainite variant selection tendency decreased with the bainite type change from granular bainite to lath bainite with autocatalytic nucleation, and the density of high-angle grain boundaries increases obviously. The deposited metal with numerous autocatalytic nucle-ation has an outstanding match of high strength and excellent low-temperature toughness due to the effective grain-refinement strengthening. The large-sized elongated Martensite-Austenite constituents in the deposited metals with 1 wt % and 2.5 wt % Ni contents deteriorate low-temperature toughness in two aspects, promoting crack nucleation and reducing the crack propagation resistance. Interlaced bainite is the most optimized among different bainite types. This work guides the microstructure design in high-strength deposited metals. ?? 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
关键词	Nickel content Impact toughness Autocatalytic nucleation Deposited metal
DOI	10.1016/j.jmrt.2023.01.064
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001024314400001
出版者	ELSEVIER
引用统计	被引频次：2[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/321006/178526
专题	中国科学院金属研究所
通讯作者	Lu, Shanping
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jingwu,Wei, Shitong,Sun, Qishan,et al. Microstructure characteristics and mechanical properties of deposited metals with different types of bainite[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2023,23:744-755.
APA	Liu, Jingwu,Wei, Shitong,Sun, Qishan,Liu, Chenghao,&Lu, Shanping.(2023).Microstructure characteristics and mechanical properties of deposited metals with different types of bainite.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,23,744-755.
MLA	Liu, Jingwu,et al."Microstructure characteristics and mechanical properties of deposited metals with different types of bainite".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 23(2023):744-755.