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ժҪ ͨ��κͺ㸺��Ӳ��Ϻ͸�ʴ��Ͻ�̼��M_(23)C_6��о��18-8�Ͱ��岻��H_2S_zO_0��Һ�е�Ӧ��ʴ��Ϊ��о�ָ��,��Ũ��2.0��6.0��,PHֵ��0.8��1.8��Χ�ǳ��Ӧ��ʴ��ѵ��н��ʡ��Ͽڽ��,��ϵ�е��͡��ڸ��ϵ��ƶ��Ĵ��ǲ��Ӧ��ʴ��Ƶ��Ҫԭ��

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Abstract�� The stress corrosion cracking(SCC) behaviors of sensitized 18Cr-8 Ni austenitic stainless steel in polythionic acid(H_2S_XO_6) were studied by means of constant-strain and constant-load tests with special attention to material composition, and environmental and M_(23)C_6 factors. It was found that the samples were quite susceptible to SCC in a medium of 2.0��6.0% H_2S_XO_6 with PH 0.8��1.8. The metallograph indicates that the cracking in this system is intergranular and the active dissolution of chromium-depleted regions along the grain boudaries is resnonsible for intergranulai SCC.

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Received 1986-07-15; published 1986-07-15

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��ɺ�;�ŵ¿�;.��岻��е�Ӧ��ʴ��[J]. ��ѧ��ҵ�빤��, 1986,3(3): 6-12

Liang Cheng-Hao Zhang De-Kang Central Iron and Steel Research Institute.The Stress Corrosion Cracking of Austenic Stainless Steel in Polythionic Acid[J]. Chemcial Industry and Engineering, 1986,3(3): 6-12