J
,
H
,
Wang
,
H. Lu and H. Murakawa 1) Shanghai Jiao Tong University
,
Shanghai 200030.China 2) Osaka University
,
Japan
金属学报(英文版)
Local postweld heat treatment (PWHT)is usually performed when it is impractical to heat treat the whole vessel in a furnace, Many factors have an influence on PWHT procedures, such as size of the pipe,heated widths, insulation conditions, heating rates soak temperatures and hold times, material com...
关键词:
postweld heat treatment
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null
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null
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null
张熹
,
许良红
,
陈延清
,
章军
材料热处理学报
讨论了焊后热处理制度对不同热输入下610 MPa级水电钢粗晶区冲击韧性的影响,发现热输入在30 kJ/cm时在620℃附近有脆化倾向;热输入在40 kJ/cm时在580℃出现显著再热脆化。SEM、TEM及能谱试验结果表明,碳化物在原奥氏体晶界析出是发生再热脆化的原因。焊接热输入不同导致碳化物在焊后热...
关键词:
610MPa
,
粗晶区
,
再热脆化
,
焊后热处理
