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中文摘要：
通过慢应变速率拉伸试验,在超临界水环境中研究了溶解氧和温度对06Cr17Ni12Mo2Ti不锈钢的应力腐蚀开裂倾向的影响规律.试验结果表明：在含不同溶解氧量（0/200/2000μg·kg-1）的450℃和550℃超临界水环境中,不锈钢都呈现出不同程度的应力腐蚀开裂倾向.随着水中溶解氧含量的增加,不锈钢的应力腐蚀开裂倾向更为明显.随着温度的上升,应力腐蚀开裂倾向反而会下降.在含不同溶解氧量（0/200/2000μg·kg-1）的650℃超临界水环境中,不锈钢只发生塑性断裂,未发现应力腐蚀开裂倾向,并且溶解氧对其影响也不是很明显.
英文摘要：
The effects of dissolved oxygen（ DO） and temperature on the stress corrosion cracking（ SCC） of 06Cr17Ni12Mo2 Ti stainless steel（ SS） in supercritical water environments were investigated by slow strain rate tensile tests（ SSRT）. It is found that the SCC susceptibility of the stainless steel is observed in 450 ℃ and 550 ℃ supercritical water environments containing different amounts of dissolved oxygen（ 0 /200 /2000 μg·kg^- 1）. The effect of dissolved oxygen on the SCC susceptibility is more remarkable with increasing amount of dissolved oxygen. However,the SCC susceptibility decreases with the increase of temperature. In 650 ℃ supercritical water environments containing different amounts of dissolved oxygen（ 0 /200 /2000 μg·kg^- 1）,ductile fracture can be found,but the SCC susceptibility is not observed. In these environments,the effect of DO is negligible.
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