期刊
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
卷 15, 期 5, 页码 400-406出版社
TAYLOR & FRANCIS LTD
DOI: 10.1179/136217110X12720264008231
关键词
Joining-welding; Grain boundaries-grain boundary structure; Grain refining; Misorientation; Simulation; Non-destructive testing
资金
- Electrical Power Research Institute (Palo Alto, CA, USA)
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据