2004
DOI: 10.1179/026708304225012170
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Evaluation of changes in X-ray elastic constants and residual stress as a function of cold rolling of austenitic steels

Abstract: Austenitic steels rapidly attain high mechanical strength when subjected to cold working. The heterogeneous plastic deformation produced in cross section of the specimen, development of preferred orientation and martensitic transformation contribute to the occurrence of residual stress in cold worked steels. AISI 304 and 316 steels were cold rolled at room temperature from 10% up to 70% deformations in steps of 10%. The formation and sigmoidal growth of martensite caused by cold rolling (CR) 304 steel was stud… Show more

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Cited by 17 publications
(10 citation statements)
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“…Similar observations were also reported earlier. [16] The surface preparation procedure for electrochemical studies, which includes mechanical polishing up to 1200 grit SiC paper, was noticed to modify the residual stress of both types of stainless steels and are presented in Table V. The compressive stress of a¢-martensite phase was changed to tensile stresses, while the austenite phase continued to remain under tensile stresses below 70 pct reduction and changed to tensile stress at and above it.…”
Section: A Microstructure Of Cold-worked Austenitic Stainless Steelsmentioning
confidence: 99%
See 1 more Smart Citation
“…Similar observations were also reported earlier. [16] The surface preparation procedure for electrochemical studies, which includes mechanical polishing up to 1200 grit SiC paper, was noticed to modify the residual stress of both types of stainless steels and are presented in Table V. The compressive stress of a¢-martensite phase was changed to tensile stresses, while the austenite phase continued to remain under tensile stresses below 70 pct reduction and changed to tensile stress at and above it.…”
Section: A Microstructure Of Cold-worked Austenitic Stainless Steelsmentioning
confidence: 99%
“…For converting strain measured by XRD, the X-ray elastic constant (1 + m)/E was used, where E is YoungÕs modulus and m is PoissonÕs ratio. To calculate residual stress, an X-ray elastic constant value of 3.25 · 10 -5 (kg/mm 2 ) -1 and 2.62 · 10 -5 (kg/mm 2 ) -1 [16] was used at small and large deformations, respectively.…”
Section: Residual Stress and Texture Determinationmentioning
confidence: 99%
“…For converting strain measured by XRD, the X-ray elastic constant, (1 ϩ )/E, where E is the Young's modulus and is the passion ratio, were used. At the small deformation 3.25 ϫ 10 Ϫ5 (kg/mm 2 ) Ϫ1 and at the large deformation 2.62 ϫ 10 Ϫ5 (kg/mm 2 ) Ϫ1 , [19] X-ray elastic constant values were used to calculate the residual stress. Specimens of 3 ϫ 3 cm in size were cut from the rolled sheet material for texture measurements.…”
Section: B Microstructural and Structural Characterizationmentioning
confidence: 99%
“…It can form through the sequence of J o H martensite o Dc martensite [21] or J o mechanical twins o Dc martensite [5]. With increase in SFE, the deformation mode changes from H martensite to deformation twinning and then to slip [22]. Hence, in SS 304 with low SFE [14] (9.2-32.5 mJ/m 2 ) H martensite has been observed while in SS 316 with high SFE [14] (34.6-80.7 mJ/ m 2 ) deformation twinning has been observed.…”
Section: Discussionmentioning
confidence: 97%