Interplay of stresses induced by phase transformation and plastic deformation during cyclic load of austenitic stainless steel

Strain-induced phase transformation in a cobalt-based superalloy during different loading modes

“…For instance, work has been done on characterizing the transformation observed in superelastic NiTi and NiTi-TiC composites [15][16][17]. Other in situ neutron-diffraction investigations on phase transformations include those observed in austeniticstainless steels [18][19][20][21], transformation-induced plasticity steels [22][23][24], Cu-Al-Zn-Mn shape-memory alloys [25], Fe-Pd shapememory alloys [26,27], U-Nb alloys [28][29][30], and nickel-containing ferromagnetic shape-memory alloys [31][32][33]. All of these studies demonstrate the usefulness of neutron diffraction for characterizing the crystallographic orientation of martensitic variants, lattice-strain development, extents of transformation, and even texture development in these materials, as a load is applied.…”

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

“…In general, residual stresses are consequence of interactions among strain, temperature and microstructure 12 . 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.…”

“…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.…”

“…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. According to author, the plastic deformation stresses may have exceeded those of the phase transformation and were observed in the results.…”

Delayed Cracking of Metastable Austenitic Stainless Steels after Deep Drawing

“…8,11) Differences in the mechanical properties of the phases cause stress and strain partition, and large strength differences between constituent phases lead to high stress ratio.…”