Effect of magnetic stirring on grain structure refinement Part 2-Nickel alloy weld overlays

被引：40
作者：
Lim, Y. C. [1 ]
Yu, X. [1 ]
Cho, J. H. [2 ]
Sosa, J. [1 ]
Farson, D. F. [1 ]
Babu, S. S. [1 ]
McCracken, S. [3 ]
Flesner, B. [4 ]
机构：
[1] Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43210 USA
[2] Hyundai & Kia Corp, Prod & Dev Coordinate Div, Hwasung 471703, South Korea
[3] Welding & Repair Technol Ctr, Elect Power Res Inst, Charlotte, NC 28262 USA
[4] NDE Innovat Grp, Elect Power Res Inst, Charlotte, NC 28262 USA
来源：
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2010年 / 15卷 / 05期
关键词：
Joining-welding; Grain boundaries-grain boundary structure; Grain refining; Misorientation; Simulation; Non-destructive testing; BETA TITANIUM-ALLOYS; ARC OSCILLATION; GTA WELDS; SOLIDIFICATION; WELDMENTS; ALUMINUM; PARAMETERS; CRACKING; METALS; STEEL;
D O I：
10.1179/136217110X12720264008231
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The formation of a columnar grain structure in high chromium nickel based alloy welds can be associated with cracking and poor resolution for ultrasonic non-destructive examination. The objective of this research was to characterise the effects of circular magnetic arc deflection ( arc stirring) on grain structure of gas tungsten arc weld overlays made on Inconel 690 substrates with 52M filler wire. Welds and weld overlays were made at various arc stirring frequencies, and microstructures were analysed using optical and electron backscattered diffraction microscopy. Significant refinement of grain size occurred at a stirring frequency of 7 Hz. Ultrasonic non-destructive examination confirmed 100% improvement in signal/noise ratio in weld overlays made with magnetic stirring.
引用
收藏
页码：400 / 406
页数：7
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