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首页> 外文期刊>Materials transactions >Effects of Hydrogen Water Chemistry on Stress Corrosion Cracking Behavior of Cold-Worked 304L Stainless Steel in High-Temperature Water Environments
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Effects of Hydrogen Water Chemistry on Stress Corrosion Cracking Behavior of Cold-Worked 304L Stainless Steel in High-Temperature Water Environments

机译：高温水环境中氢水化学对冷加工304L不锈钢应力腐蚀开裂行为的影响

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摘要

This study measured the stress corrosion cracking (SCC) growth rates of cold-worked 304L stainless steel in oxygenated and hydrogenated coolant environments. The effects of cold work at the levels of 5, 20, and 30% on SCC were also investigated. The SCC crack growth rate increased substantially with increases in the degree of cold work in oxygenated water environment. However, after hydrogen injection, SCC propagation in all cold worked specimens was gradually inhibited. The time to crack arrest decreased with increases in the degree of cold work. The slip bands caused by cold work facilitated the initiation and growth of transgranular (TG) cracks in specimens exposed to an oxygenated coolant environment. TG cracks were easier to arrest compared with intergranular cracks after the injection of hydrogen into the coolant system.
机译：这项研究测量了在氧化和氢化冷却液环境下冷加工304L不锈钢的应力腐蚀开裂（SCC）增长率。还研究了5％，20％和30％水平的冷作对SCC的影响。随着含氧水环境中冷加工程度的增加，SCC裂纹的生长速率显着增加。但是，注入氢气后，SCC在所有冷加工试样中的传播逐渐受到抑制。随着冷加工程度的增加，裂纹止裂的时间减少了。由冷加工引起的滑移带促进了暴露于含氧冷却剂环境中的样品中跨晶（TG）裂纹的萌生和扩展。与向冷却剂系统中注入氢气后的晶间裂纹相比，TG裂纹更易于阻止。

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