Effect of Cold Working on Stress-Corrosion Cracking of Stainless Steels

Maekawa Tatsuo, Kagawa Masaru, Nakajima Nobuwo

doi:10.2320/jinstmet1952.27.11_548

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ステンレス鋼の応力腐食割れにおよぼす冷間加工の影響
ステンレスコウノオウリョクフショクワレニオヨボスレイカンカコウノエイキョウ

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Abstract

An investigation was made of the effect of cold working on the susceptibility of seven austenitic stainless steels belong to AISI Type 304(or 304 L) to stress-corrosion cracking in high temperature NaCl solution (300°C, 500 ppm as Cl⁻) and in boiling 42%MgCl₂ solution. The stress-corrosion was compared with the general corrosion in high temperature pure water and high temperature NaCl solution. These results are summarized as follows: (1) The carbon contents and heat treatments before cold working do not affect appreciably the susceptibility of stainless steel to the stress-corrosion cracking in high temperature NaCl solution. (2) The degree of cold working does not seem to have a direct relation to the susceptibility of stainless steel to the stress-corrosion cracking in high temperature NaCl solution and in boiling 42%MgCl₂ solution. However, the ferrite transformed from the austenite by cold working decreases significantly the susceptibility of stainless steel to the stress-corrosion cracking in both solutions. (3) The general corrosion rate of uncracked specimens is higher than that of cracked ones.

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Journal of the Japan Institute of Metals and Materials

Journal of the Japan Institute of Metals and Materials 27 (11), 548-553, 1963

The Japan Institute of Metals and Materials

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