Residual stresses in biaxially fatigued austenitic stainless steel sample of cruciform geometry

Taran, Yu.V.; Балагуров, А. М.; Schreiber, J.; Evans, Alexander; Venter, А.M.

doi:10.1088/1742-6596/340/1/012099

Cited by 1 publication

(3 citation statements)

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“…In the literature approaches 12,[21][22][23][24] there is no single definition to the residual stresses state in TRIP steel after martensitic transformation. Taran et al [21][22][23]25 investigated the residual stresses in AISI 321 steel using a neutron diffraction technique, after fatigue test. Taran et al 21,22 observed compressive stress for austenite and tractive stress for martensite, which decreased in magnitude with the martensite volume increases.…”

Section: Resultsmentioning

confidence: 99%

“…In the continuation of his investigation, TARAN 23 observed from total stresses calculation, the austenite phase in compression, while the martensite phase would be in balanced tractive stress of greater magnitude for smaller volumetric fraction. Investigating the distribution of radial stresses, TARAN 25 observed hydrostatic stress for austenite in its majority and compressive stress for martensite. Papula et al 12 studied the residual stresses from the (γ→α') transformation in some austenitic stainless steels after delayed cracking.…”

Section: Resultsmentioning

confidence: 99%

“…The results showed tensile residual stresses in both phases. Thus, the residual stresses study from the strain-induced martensitic transformation is complex due to the interaction among the deformation process stresses and those resulting from phase transformation 21,22 , as well as, due to the intrinsic characteristics of each phase, such as elastic properties and specific volume [21][22][23]25,26 .…”

Section: Resultsmentioning

confidence: 99%

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Residual Stress Analysis After the Induced Martensitic Transformation by Rolling and Tensile Test in the 304L TRIP Steel

2021

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In this work, the residual stress study by XRD was carried out after martensitic transformation of a 304L steel subjected to plastic strain by rolling and tensile test, at room and cryogenic temperatures. This article intents to contribute with the understanding of residual stresses generated by martensitic transformation induced by plastic deformation due to its complexity. From the experimental conditions employed, it was possible to obtain high martensite volumetric fraction and it was possible to observe the influence of existing phases on the performance of residual stress measurements. In general, compressive residual stress was observed for both austenite and martensite phases. The samples rolled at cryogenic temperature showed higher magnitudes of compressive stresses, between -123 and -231 MPa, for martensite volumes between 98 and 100%. It was also clearly displacement and widening of diffraction line due to the presence of residual macro and microstresses when compared to the as-received material.

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