Consideration on the Mechanism of Reheat Cracking of Cr-Mo Steels : Mechanism of Grain Boundary Embrittlement by Carbide Precipitation
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概要
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The following points are introduced in order as concerned to reheat cracking sensitivity and crack producing mechanism. i)Reheat cracking sensitivity of various Cr-Mo steels was quantitatively compared using critical stress for producing cracking (ÓAW-crit). ⅱ)There was a chemical composition field in which cracking sensitivity is very high (Field Ⅲ). ⅲ)In such the field, M2C carbide generally precipitates. It will play an important role to produce the cracking. ⅳ)But the grain strengthening effect of M2C was not so much decisive to crack formation, as was expected from the precipitation hardening hypothesis. ⅴ)Then the authors propose a new type of phosphorus-embrittling hypothesis which can explain the mechanism of phosphorus segration caused mainly by M2C precipitation.
- Faculty of Engineering, Mie Universityの論文
- 1981-12-21
Faculty of Engineering, Mie University | 論文
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