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Si Zhongyao, Yu Erjing, Ying Huiyun, Liu Xingzhi, Liu Quan. STUDY OF THE TEMPERATURE RAGES OF HOT CRACKING FORMATION IN THE WELD METAL OF LOW-CARBON STEEL[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 1989, (2): 87-94.
Citation: Si Zhongyao, Yu Erjing, Ying Huiyun, Liu Xingzhi, Liu Quan. STUDY OF THE TEMPERATURE RAGES OF HOT CRACKING FORMATION IN THE WELD METAL OF LOW-CARBON STEEL[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 1989, (2): 87-94.
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STUDY OF THE TEMPERATURE RAGES OF HOT CRACKING FORMATION IN THE WELD METAL OF LOW-CARBON STEEL

  • Institute of Metal Research, Academia Sinica

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  • Received Date: March 26, 1989
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  • There exist three brittle temperature ranges during the course of solidification and cooling process in the weld metal of Low-carbon steel. The first range is the solidification brittle temperature range (BTRS). Sulfur is the principal element to widen the BTRs. A relationship among the sulfur and manganese in the world metal and the BTRs has been established as follows.BTRS(℃)=25+927(%S)-28(%Mn)The second range is the ductility-dip brittle temperature range (BTRD), which is about 1100~800℃ for the tested materials. A mechanism of the formation of BTRD is proposed. The third BTR is below 600℃. Its formation mechanism needs further investigation.
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