Effect of Surface High Frequency Current Tempering on Notch Sensitivity of Hardened 40KHN Steel.

被引：0
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作者：
Khodzher, P.K.
Volkov, A.K.
Dvoyashov, K.V.
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来源：
Problemy Prochnosti | 1987年 / 04期
关键词：
STEEL HEAT TREATMENT - Tempering - STEEL TESTING;
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摘要：
Surface HFC tempering is studied for its effect on the notch sensitivity of 40KHN steel. Impact bending, tensile and bolt tensile-cross-threading tests are carried out for specimens with a ring notch. It is shown that the presence of a plastic surface layer produced by the HFC tempering essentially decreases notch sensitivity of hardened 40KHN steel, optimal depth of tempering depending on the notch parameters and specimen diameter as well as on the type of loading.
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页码：23 / 25
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