... Retests, frogings 复试，锻件 impact specimens 冲击试样 joints, welded 接头，焊接 ...
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Low Energy Izod Impact Specimens 低能缺口冲击试样
The results show that after post-weld heat treatment(PWHT), the welds of X80 steel seriously embrittle, and the fracture morphology of impact specimens is cleavage.
结果表明，经过焊后热处理后焊缝出现严重的低温脆化，其冲击试样的断口为解理状形貌；
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