Quantitative Characterization of Beta Fleck Segregation in a Ti-17 Alloy Ingot Produced by Vacuum Arc Remelting Without Electromagnetic Stirring

doi:10.1007/s12540-024-01852-0

IMR OpenIR

	Quantitative Characterization of Beta Fleck Segregation in a Ti-17 Alloy Ingot Produced by Vacuum Arc Remelting Without Electromagnetic Stirring
	Yin, Xuchen 1,2; Liu, Jianrong 3; Wang, Qingjiang 3; Li, Wenyuan 3; Deng, Hao 2; Wang, Zhoutian 2; Luo, Hengjun 2; Li, Wenhui 1
通讯作者	Liu, Jianrong(jrliu@imr.ac.cn) ; Wang, Qingjiang(qjwang@imr.ac.cn)
	2024-11-28
发表期刊	METALS AND MATERIALS INTERNATIONAL
ISSN	1598-9623
页码	13
摘要	Beta flecks (beta-flecks), known as segregation defects, commonly occur in some alpha + beta and metastable beta titanium alloys with a high content of beta-stabilizing elements such as Cr and Fe, seriously impacting the mechanical properties of the final product. In this work, an experimental Ti-17 alloy ingot was produced by vacuum arc remelting (VAR) processes without electromagnetic stirring. beta-flecks were identified throughout the entire ingot. To quantitatively characterize the segregation extent and morphological complexity of beta-flecks, three parameters, including quantity (Q), segregation ratio (R beta) and fractal dimension (DPA), were introduced. The results show that beta-flecks with two shapes exist in three regions: irregular beta-flecks formed in a spherical shape region (Region A) in the lower part and a heart shape region (Region B) in the upper part of the equiaxed zone, while channel-like beta-flecks formed in a V shape region (Region C) in the hot top zone. beta-flecks formed in Region A show a higher degree of segregation extent (higher Q and R beta) and morphological complexity (higher DPA), compared to those in Region B. These findings suggest that solidification conditions, particularly temperature gradient (G) and solidification rate (R), play crucial roles in the formation of beta-flecks during the VAR process. By quantifying permeability in different sections of the equiaxed zone, liquid flow and its impact on the formation of beta-flecks during solidification processes are discussed.
关键词	Beta flecks Segregation defects Titanium alloy ingot Vacuum arc remelting
资助者	Fundamental Research Program of Shanxi Province ; Scientific Research Foundation of Taiyuan University of Technology
DOI	10.1007/s12540-024-01852-0
收录类别	SCI
语种	英语
资助项目	Fundamental Research Program of Shanxi Province ; Scientific Research Foundation of Taiyuan University of Technology[2022QN152] ; [202103021223052]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001365205300001
出版者	KOREAN INST METALS MATERIALS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/181554
专题	中国科学院金属研究所
通讯作者	Liu, Jianrong; Wang, Qingjiang
作者单位	1.Taiyuan Univ Technol, Coll Aeronaut & Astronaut, Taiyuan 030024, Peoples R China 2.China Natl Erzhong Grp Deyang Wanhang Die Forging, Deyang 618000, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Yin, Xuchen,Liu, Jianrong,Wang, Qingjiang,et al. Quantitative Characterization of Beta Fleck Segregation in a Ti-17 Alloy Ingot Produced by Vacuum Arc Remelting Without Electromagnetic Stirring[J]. METALS AND MATERIALS INTERNATIONAL,2024:13.
APA	Yin, Xuchen.,Liu, Jianrong.,Wang, Qingjiang.,Li, Wenyuan.,Deng, Hao.,...&Li, Wenhui.(2024).Quantitative Characterization of Beta Fleck Segregation in a Ti-17 Alloy Ingot Produced by Vacuum Arc Remelting Without Electromagnetic Stirring.METALS AND MATERIALS INTERNATIONAL,13.
MLA	Yin, Xuchen,et al."Quantitative Characterization of Beta Fleck Segregation in a Ti-17 Alloy Ingot Produced by Vacuum Arc Remelting Without Electromagnetic Stirring".METALS AND MATERIALS INTERNATIONAL (2024):13.