本文介绍了利用Devanathan氢渗透法计算临界氢浓度的理论模型,结合调质20钢,测定了在不同应力作用下,试件沿氢渗透方向上的氢浓度分布和氢致断裂造成的裂纹萌生(主要沿MnS夹杂界面)时的临界氢浓度值,并对相关问题进行了简单的讨论。
The theoretical model to calculating critical hydrogen concentration wasreviewed using Devanathen's hydrogen permeation method. The distribution of hydro-gen coneentration along the direction of hydrogen permeation and the critical hydro-gen concentration during hydrogen--induced crack growing, mainly along MnS inclu-sion interfaces, in the hardened and tempered steel 20 have been determined. The al-lied problems were also discussed briefly.
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