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用金相显微镜、万能拉伸试验机、电子布氏硬度计、冲击试验机研究了碳对00Cr22Ni5Mo3N双相不锈钢显微组织、力学性能、耐腐蚀性能的影响。结果表明,随着碳由0.012%增加到0.052%时,奥氏体量略有增加,铁素体量逐渐减少,屈服强度和抗拉强度变化不大,断后伸长率不断增大,而断面收缩率先增大后小范围波动,冲击吸收能量明显下降,硬度逐渐降低。在碳含量为0.012%时,耐电化学腐蚀和耐应力腐蚀性能最佳。当碳含量在0.012%时,00Cr22Ni5Mo3N双相不锈钢综合性能最佳。
The effects of carbon on the microstructure, mechanical properties and corrosion resistance of 00Cr22Ni5Mo3N duplex stainless steel were investigated by metallographic microscope, universal tensile tester, electronic Brinell hardness tester and impact tester. The results show that with the increase of carbon from 0.012% to 0.052%, the amount of austenite increases slightly, the amount of ferrite decreases gradually, the yield strength and tensile strength change little, and the elongation at break increases. The shrinkage rate firstly increases and then fluctuates in a small range, the impact absorption energy decreases obviously and the hardness decreases gradually. In the carbon content of 0.012%, the best resistance to electrochemical corrosion and stress corrosion resistance. When the carbon content of 0.012%, 00Cr22Ni5Mo3N duplex stainless steel best overall performance.