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利用热处理将GA钢制备成4种类型的双相(DP)钢,并进行了拉伸和冲击试验。通过扫描电子显微镜研究了拉伸和冲击试验的试样(DH36,GA和DP钢)的断裂表面。结果表明,应用热处理方法可以将GA钢成功地转变为DP钢;最低淬火温度的A730W试样的强度优于DH36钢的强度;GA钢具有最高的冲击韧性值;A800W和A900W试样的冲击韧性值高于DH36钢的冲击韧性值。
GA steel was prepared by heat treatment into four types of dual phase (DP) steel, and tensile and impact tests. Fracture surfaces of tensile and impact test specimens (DH36, GA, and DP steel) were investigated by scanning electron microscopy. The results show that the heat treatment method can successfully transform GA steel into DP steel; the lowest quenching temperature A730W sample strength is better than the strength of DH36 steel; GA steel has the highest impact toughness value; A800W and A900W sample impact toughness The value is higher than the impact toughness value of DH36 steel.