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摆锤刀刃半径对SA508Gr.3Cl.2钢冲击试验结果的影响

Xiaodong LI,Yang DING,Jialei GU

Physical Testing and Chemical Analysis Part A:Physical Testing（2018）

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Abstract
冲击试验标准ASTM E23—16b和EN 10045-1:1990,对于摆锤刀刃半径的要求分别为8 mm和2 mm,为了研究这两种摆锤刀刃半径对于冲击试验结果的影响,依据这两个标准对SA508Gr.3Cl.2钢进行了系列温度冲击试验,并对断口形貌进行了观察.结果表明:摆锤刀刃半径对冲击吸收能量、侧膨胀值、剪切断面率以及韧脆转变温度等均有影响;总体上在韧性区和脆性区即低能量和高能量范围内,2 mm摆锤刀刃半径测得的数值小于8 mm摆锤刀刃半径测得的,在韧脆转变温度范围内,两者之间没有明显的大小关系.
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