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Effects of oxygen content on microstructure and impact toughness of high heat input flux-cored wire
weld metals
期刊名称： Metallurgical Rearch and Technology
天下大事必做于细
作者： Song, Fengyu,Li, Yanmei,Wang, Ping,Zhu, Fuxian
老年人补品排行榜
年份： 2018年
期号： 第4期
关键词： oxygen content;toughness;acicular ferrite;weld metal;high heat input
摘要：Three weld metals with different oxygen contents were developed. The influence of oxygen contents on the microstructure and impact toughness of weld metal was investigated through high heat input welding tests. The results showed that a large number of fine inclusions were formed and distributed randomly in the weld metal with oxygen content of 500 ppm under the heat input condition of 341
凤溪小学
长滩岛旅游攻略
好的英语kJ/cm. Substantial cross interlocked acicular ferritic grains were induced to
generate in the vicinity of the inclusions, primarily leading to the high impact toughness at low temperature for the weld metal. With the increa of oxygen content, the number of fine inclusions distributed in the weld metal incread and
the grain size of intragranular acicular ferrites decread, which enhanced the
impact toughness of the weld metal. Nevertheless, a...
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