Stress corrosion cracking of cold-worked austenitic stainless steels

Cigada, A.; Mazza, B.; Pedeferri, Pietro; Salvago, G.; Sinigaglia, D.; Zanini, G.

doi:10.1016/0010-938x(82)90055-5

Cited by 41 publications

(17 citation statements)

References 9 publications

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“…The researchers Cigada et al consider that deformation-induced martensite is one of the main causes of the stress-corrosion cracking of these steels in a Cl Ϫ -containing medium. [1] Hidehiko et al advance the theory that the reason that ␣Ј martensite is preferentially dissolved is its high-density dislocations. [2] Kwok et al reported that the pitting potential of martensite is about 550 mV lower than that of austenite in a martensite stainless steel, [3] so that martensite tends to be dissolved preferentially.…”

Section: Introductionmentioning

confidence: 99%

The effect of electrochemically induced annealing on the pitting resistance of metastable austenite stainless steel

Liu

2006

Metall Mater Trans A

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Deformation-induced martensites in metastable austenite stainless steels affect their physical and chemical properties. Electrochemically induced annealing (EIA) is a recently discovered phenomenon. Although the reason why EIA treatment causes martensite to decrease or disappear is not clear, the effect of the martensite decrease or disappearance is supposed to be the same as that caused by heat-treatment annealing. The pitting resistance of the EIA-treated samples is compared with that of the untreated ones, through open-circuit potential, metallurgical microscope observation, and potentiodynamic scanning. The following results are obtained for the EIA-treated samples, after a 1.5-V anode charge in a 3.5 pct NaCl solution, as compared with the untreated samples: the deepest pit in the treated samples is far more shallow than the deepest pit in the untreated samples; there is far less pitting in the treated samples than in the untreated samples; and the largest pit in the treated samples is much smaller than the largest pit in the untreated samples. Initially, the open-circuit potential of the EIA-treated sample was 64 mV higher than that of the untreated one, but they reach close values after certain period of time. The pitting breakthrough potential, E b , of the EIA-treated sample is about 0.2 V higher than that of the untreated one. Therefore, EIA is a method that has the potential to promote the pitting resistance of metastable austenite stainless steels.

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Section: Introductionmentioning

confidence: 99%

The effect of electrochemically induced annealing on the pitting resistance of metastable austenite stainless steel

Liu

2006

Metall Mater Trans A

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“…It is well known that cold working has deleterious effects on the SCC behaviour (Muraleedharan et al, 1985;Gigada et al, 1982). Muraleedharan et al (1985) reported that the total time to fracture in the SCC tests on SUS304 and 316 steels decreased with increasing cold work.…”

Section: Resultsmentioning

confidence: 99%

High-temperature and high-pressurein situSCC device for synchrotron radiation diffraction experiments and application using an austenitic stainless steel

Yamamoto

Nakahigashi²,

Terasawa

et al. 2005

J Synchrotron Radiat

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Suppressing the stress corrosion cracking (SCC) by reducing the carbon content in austenitic stainless steels is apparently not effective on core shrouds used in boiling water reactors in Japan: trans-granular cracking was found in the shrouds. To clarify the mechanism of the cracking, in situ stress measurements on specimens under stretched conditions in hot water have been attempted in the present study. An in situ device for diffraction measurements at synchrotron radiation facilities has been developed, and in situ experiments have been carried out at SPring-8. The SUS316L steel specimen was solution heat-treated, surface-ground and then placed in the in situ device. Sapphire windows were used for the light path in the device. A sufficient diffracted beam intensity was obtained through two sapphire windows and water. The side-inclination method was used for measuring the stress exerted on the specimen. A 2theta-sin2psi plot showed that a tensile stress was induced. The measured stress value is considered to be the summation of stresses owing to pre-straining, in situ loading and residual stress owing to surface grinding.

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“…Sedangkan spesimen prestrain 5% lebih cepat terjadi retakan awal (crack initition) karena sifat elastis bahan yang menurun, namun efek pengerasan regangan belum begitu siginifikan, sehingga masa inkubasi yang terjadi lebih cepat. Untuk spesimen prestrain 10% masa inkubasi yang terjadi lebih lama karena besarnya prosentase deformasi plastis yang diberikan membuat bahan mengalami pengerasan regangan (strain hardening) merata pada bahan [4]. Dengan kata lain, deformasi plastis yang berlebihan dapat meningkatkan besarnya densitas dislokasi pada lapisan permukaan.…”

Section: Metode Penelitianunclassified

Stress Corrosion Cracking Behavior of Stainless Steel 304 in the Sulfuric Acid Environment Due to Prestrain

Badaruddin¹,

Serjouei²,

Hamni³

2010

MST

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AbstrakTujuan penelitian ini adalah untuk mengetahui pengaruh prestrain terhadap perilaku korosi retak tegang stainless steel AISI 304 dalam larutan H 2 SO 4 konsentrasi 10% dengan pembebanan kantilever statis (ASTM E-1681). Prestrain dilakukan dengan meregangkan spesimen hingga mencapai regangan merata 5% dan 10% diatas tegangan luluh bahan, menggunakan servopulser UTM 9506 dengan kontrol kecepatan 0,3 mm/sec. Hasil pengujian menunjukan bahwa spesimen dengan 5% prestrain lebih cepat mengalami kegagalan daripada spesimen 10% prestrain dan tanpa prestrain. Hal ini disebabkan menurunnya keuletan dan periode inkubasi yang singkat. Perubahan defleksi hanya dapat diamati pada pembebanan 20% tegangan luluh bahan. Retak intergranular ditemukan pada spesimen 10% prestrain pada pembebanan statis 616 MPa. Sedangkan pada specimen 10% prestrain ditemukan retak transgranular pada pembebanan statis 554,4 MPa. Retak kombinasi ditemukan pada specimen 5% prestrain pada pembebanan statis 369,6 MPa. Semakin tinggi densitas dislokasi pada lapisan permukaan akibat deformasi plastis, semakin sulit difusi hidrogen pada ujung retak. Konsekuensinya, periode inkubasi dapat diperlama.. Abstract Stress Corrosion Cracking Behavior of Stainless Steel 304 in the Sulfuric Acid Environment Due to Prestrain.The aim of research is to investigate the effect of prestrain on the stress corossion cracking behavior of AISI 304 stainless steel in the sulfuric acid of 10% concentration under the static cantilever loading according to ASTM E-1681 standart. The specimen of 304 Stainless steel was strain up over the yield strength until reaching the uniform strain of 5% and 10% using servopulser UTM 9506 under the displacement control of 0,3 mm/sec. The results of test show that the prestrain of 5% specimen is faster failure than both of the prestrain of 10% and unprestrain specimen. It was caused by both of the decrease of ductility and the short incubation period. The change of deflection could be only recorded under the loading 20% of yield strength. Intergranular crack was the prestrain of 10% specimen under the static loading of 616 MPa. Whereas, for the prestrain of 10% specimen transgranular crack was found under the static loading of 554,4 MPa. The prestrain of 5% specimen was mixed crack under the static loading of 369.6 MPa. Higher dislocation density on the layer surface due to plastic deformation with increasing the percentage of pre-strain, so more difficult hydrogen diffused into the crack tip. Consequently, The incubation period can be prolonged. Keywords: stress corrosion cracking, incubation period, prestrain, trans-inter granular cracking PendahuluanBanyak insiden yang terjadi menyangkut kemampuan bahan, seperti patahnya tiang konstruksi bangunan, patahnya tiang pancang pada pengeboran lepas pantai, tangki gas meledak, bocornya pipa, padahal beban yang diterima masih dalam batas yang diizinkan. Kejadiankejadian ini menunjukkan bahwa bahan tersebut mengalami deformasi plastis yang besar (prestrain), sehingga bahan menjadi getas akibat manu...

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Stress corrosion cracking of cold-worked austenitic stainless steels

Cited by 41 publications

References 9 publications

The effect of electrochemically induced annealing on the pitting resistance of metastable austenite stainless steel

The effect of electrochemically induced annealing on the pitting resistance of metastable austenite stainless steel

High-temperature and high-pressurein situSCC device for synchrotron radiation diffraction experiments and application using an austenitic stainless steel

Stress Corrosion Cracking Behavior of Stainless Steel 304 in the Sulfuric Acid Environment Due to Prestrain

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