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International Journal of Iron and Steel Society of Iran، جلد ۳، شماره ۱، صفحات ۲۰-۲۵
عنوان فارسی Stress- Corrosion Crack Initiation of High-strength Pipeline Steel in Near-neutral pH Environments
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عنوان انگلیسی Stress- Corrosion Crack Initiation of High-strength Pipeline Steel in Near-neutral pH Environments
چکیده انگلیسی مقاله Stress-corrosion cracking (SCC) tests were conducted in the near-neutral pH standard solution, NS4, and in an actual soil solution, using four-point bending at a high stress ratio and low frequency conditions very similar to those of operational pipelines. Pitting incubation appeared first and then pitting initiated and grew in both solutions although there were many more pits on the specimen tested in soil purged with 5% CO2 +95%N2 than in the specimen tested in NS4 solution purged with the same gas. These observations show that samples in soil solution are more susceptible to pitting than those in NS4 solution. When the pit reached a critical size, the increased stress concentration around the pits, resulted in transition to a crack.
کلیدواژه‌های انگلیسی مقاله Stress-corrosion cracking, High-strength, Pipeline
نویسندگان مقاله b fang |
environmental corrosion center, institute of metal research chinese academy of science, shenyang, p. r. china, 10016 and canmet materials technology laboratory 568 booth street, ottawa, ontario, canada k1a 0g1

ابراهیم حسین هانیه | e h
environmental corrosion center, institute of metal research chinese academy of sciences, shenyang, p. r. china, 10016

m elboujdaini |
environmental corrosion center, institute of metal research chinese academy of sciences, shenyang, p. r. china, 10016

w zheng |
canmet materials technology laboratory 568 booth street, ottawa, ontario, canada k1a 0g1

r. w. revie |
canmet materials technology laboratory 568 booth street, ottawa, ontario, canada k1a 0g1

r. w. revie |
canmet materials technology laboratory 568 booth street, ottawa, ontario, canada k1a 0g1

نشانی اینترنتی http://journal.issiran.com/article_4808_65cb940cc83c7ce0bdce125ab879d852.pdf
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