本工作通过电化学，恒载荷应力腐蚀和再钝化试验，对碳钢在碱溶液中的应力腐蚀破裂进行了研究。
The stress corrosion cracking(SCC) of carbon steels in aqueous alkali was studied by electrochemical technique, stress corrosion test under constant load and repassivation test.
充氢条件下应力弛豫和恒载荷拉伸试验结果表明，氢有引起钢的软化和硬化的双重作用。
The experimental results of stress relaxation and constant load tests in hydrogen charging condition prove that hydrogen has dual action of softening and hardening steel.
经试验验证，采用机械压力机恒载荷精密模锻技术生产的锻件尺寸精度高、表面光洁、锻造流线不外露。
Test findings indicate that the forged pieces produced by this technology boast the advantages of high precision in dimension, good surface smoothness and hidden forging lines.
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