高纯Fe-30Cr-2Mo合金的脆化和韧性研究

Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy Pub Date : 1979-12-05 DOI:10.1520/STP38203S

S. Saito, H. Tokuno, Muneaki Shimura, E. Tanaka, Yasuzi Kataura, T. Ototani

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引用次数: 4

摘要

通过实验解释了高纯度Fe-30Cr-2Mo合金在制备过程中出现的意外脆化现象。通过bridgman型试样的静压拉伸试验，发现该合金的断裂行为高度依赖于应力状态。在低三轴应力条件下，合金表现出良好的延展性。而在高三轴应力条件下，其断裂应变较小，由韧性断裂向解理断裂转变。通过热处理，Fe-30Cr-2Mo合金的韧性得到显著提高。

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On the Embrittlement and Toughness of High-Purity Fe-30Cr-2Mo Alloy

Experiments were conducted to explain unexpected embrittlement phenomena encountered in fabricating a high-purity Fe-30Cr-2Mo alloy. By means of a hydrostatic tension test with a Bridgman-type specimen it was found that the fracture behavior of the alloy is highly dependent on stress state. Under conditions of low triaxial stress, the alloy displays excellent ductility. Under conditions of high triaxial stress, however, it shows less strain to fracture and a transition from ductile to cleavage fracture. The toughness of the Fe-30Cr-2Mo alloy can be significantly improved by thermomechanical processing.

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Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy

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