预热温度和冷却速度对X80抗大变形管线钢焊接粗晶区性能的影响
예열온도화냉각속도대X80항대변형관선강한접조정구성능적영향
Effect of Pre-heat Temperature and Cooling Rate on Properties in Coarse Grain Heat-affected Zone for X80 High Deformability Pipeline Steel
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