Microstructure–grain orientation relationship in coarse grain nickel cold-rolled to large strain

Chen, H.S.; Godfrey, A.; Hansen, Niels; Xie, Jun; Liu, Q.

doi:10.1016/j.msea.2006.07.177

Cited by 12 publications

(10 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3f). In addition, combining with previous researches [20,30,31], there was a significant dependence of microstructure and slip system on grain orientation at high deformation. Therefore, it could be suggested that the formation of Copper and S textures is attributed to the activation of {110}<110> and {001}<110> slip systems.…”

Section: Resultssupporting

confidence: 63%

Evolution of Goss texture in an Al–Cu–Mg alloy during cold rolling

Zhao

Liu

et al. 2020

Archiv.Civ.Mech.Eng

View full text Add to dashboard Cite

Evolution of Goss texture in an Al-Cu-Mg alloy during cold rolling was investigated by three-dimensional orientation distribution functions, electron back-scattered diffraction and transmission electron microscopy. The results showed that with increasing reduction from 23.7 to 80%, Goss textures gradually transformed into Brass texture through the activation of sole {111}<110> slip systems. When rolling reduction further increased from 80 to 86.3%, Goss texture rather than Brass started to rotate towards Copper and S components. The formation of Copper and S textures at these high reductions was attributed to the activation of {110}<110> and {001}<110> non-octahedral slip systems.

show abstract

Section: Resultssupporting

confidence: 63%

Evolution of Goss texture in an Al–Cu–Mg alloy during cold rolling

Zhao

Liu

et al. 2020

Archiv.Civ.Mech.Eng

View full text Add to dashboard Cite

show abstract

“…For samples deformed from low to medium strains heterogeneity is present on the grain scale, as a result of the orientation dependence of the deformation microstructure [9,10]. Such an effect can in fact also be seen in samples deformed by rolling to large strains if the initial grain size is sufficiently large [11,12]. Inside individual grains heterogeneity can also exist in the form of microshear bands and localized glide bands [13][14][15], where such features are most commonly observed at medium to high strains.…”

Section: Introductionmentioning

confidence: 98%

Characterization and influence of deformation microstructure heterogeneity on recrystallization

Godfrey

Mishin

2015

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Abstract. The microstructure resulting from plastic deformation of metals typically contains heterogeneity on several length scales. This is also true for samples deformed to large strains, where an important form of heterogeneity is in the variation in microstructural refinement by high angle boundaries. A methodology for quantifying this type of heterogeneity based on the identification of areas classified as low misorientation regions (LMRs) is described, and some parameters for quantification of both the extent and length scale of LMRs are presented. It is then shown how this approach can be used to investigate the early stages of recrystallization in samples deformed to large strains, by direct comparison of electron backscatter diffraction (EBSD) maps of the same area before and after annealing. Methods for estimation of the stored energy of deformation from EBSD data are also surveyed and the problems of each for quantification of the local variation in stored energy are discussed, where it is concluded that a method based on the summation of the contributions from individual boundary segments is considered to be the best suited at present for characterization of the local variation in stored energy on the scale of the dislocation boundary features.

show abstract

“…[9] At large strain an effect of grain size can also be found. For example, it has been observed in pure nickel, cold-rolled to strain of e vM = 4.5 that the dislocation density increases and the boundary spacing decreases when the grain size is reduced from 500 lm [10] to 70 lm. [11] As to the effect of elements in solid solution, it is well established that their presence leads to structural refinement related to a reduction in dynamic recovery thereby increasing the dislocation density at a given strain.…”

mentioning

confidence: 99%

Ultrafine Structure and High Strength in Cold-Rolled Martensite

Huang

Morito

Hansen

et al. 2012

Metall Mater Trans A

Self Cite

View full text Add to dashboard Cite

Structural refinement by cold rolling (10 to 80 pct reductions) of interstitial free (IF) steel containing Mn and B has been investigated from samples with different initial structures: (a) lath martensite, (b) coarse ferrite (grain size 150 lm), and (c) fine ferrite (22 lm). Unalloyed IF steel with a coarse grain size (120 lm) has also included based on a previous study. Deformation microstructures and structural parameters have been analyzed by transmission electron microscopy and electron backscatter diffraction, and mechanical properties have been characterized by hardness and tensile testing. At low to medium strains, lath martensite transforms into a cell block structure composed of cell block boundaries and cell boundaries with only a negligible change in strength. At medium to large strains, cell block structures in all samples refine with increasing strain and the hardening rate is constant (stage IV). A strong effect of the initial structure is observed on both the structural refinement and the strength increase. This effect is largest in lath martensite and smallest in unalloyed ferrite. No saturation in structural refinement and strength is observed. The discussion covers the transformation of lath martensite into a cell block structure at low to medium strains where the driving force is suggested to be a decrease in the dislocation line energy. Medium to large strain-hardening mechanisms are discussed together with structure-strength relationships assuming additive stress contributions from dislocations, boundaries, and elements in solid solution. Good agreement is found between flow stress predictions and stress values observed experimentally both in the initial undeformed martensite and in deformed samples.

show abstract

Microstructure–grain orientation relationship in coarse grain nickel cold-rolled to large strain

Cited by 12 publications

References 10 publications

Evolution of Goss texture in an Al–Cu–Mg alloy during cold rolling

Evolution of Goss texture in an Al–Cu–Mg alloy during cold rolling

Characterization and influence of deformation microstructure heterogeneity on recrystallization

Ultrafine Structure and High Strength in Cold-Rolled Martensite

Contact Info

Product

Resources

About