首页> 外文会议>International Conference on TRIP-Aided High Strength Ferrous Alloys, Jun 19-21, 2002, Ghent, Belgium >Microstructural evolution and crystallographic texture formation of cold rolled austenitic Fe-30Mn-3Al-3Si TWIP-steel
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Microstructural evolution and crystallographic texture formation of cold rolled austenitic Fe-30Mn-3Al-3Si TWIP-steel

机译:冷轧奥氏体Fe-30Mn-3Al-3Si TWIP钢的组织演变和晶体学组织

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摘要

The microstructural and texture evolution of cold rolled low stacking fault energy fcc Fe-30Mn-3Al-3Si alloy was investigated as a function of the cold rolling strain. The alloy was melted and cast in a vacuum induction furnace, hot rolled and annealed before being cold rolled at three different strains: ε = 0.035, ε = 0.2 and ε = 1.2. During the cold rolling process different deformation mechanisms became active depending on the strain. At low strain levels, ε = 0.035 and ε = 0.2, slip traces were observed whereas at higher strains shear bands appeared. The brass orientation {110}<112> spreading towards the Goss orientation {110}<001> was dominant at every strain level. The intensity of these texture components increased with increasing rolling strain. The increase of the brass component is more pronounced if ε varied from 0.035 to 0.2, whereas the increase of the Goss component is more pronounced if ε varied from 0.2 to 1.2. Additional texture components developed: the E orientation {111 }<110> lying on the γ-fibre and the S orientation {123}<634> lying on the β-fibre. This evolution is comparable to other low SFEfcc materials and probably stems from the formation of shear bands.
机译:研究了冷轧低堆垛层错能fcc Fe-30Mn-3Al-3Si合金的组织和织构演变与冷轧应变的关系。合金在真空感应炉中熔化并铸造,热轧和退火,然后以三种不同的应变冷轧:ε= 0.035,ε= 0.2和ε= 1.2。在冷轧过程中,取决于应变,不同的变形机制变得活跃。在低应变水平下,ε= 0.035和ε= 0.2,观察到滑动痕迹,而在较高应变下,出现剪切带。黄铜取向{110} <112>向戈斯取向{110} <001>扩展在每个应变水平上均占主导。这些纹理成分的强度随着轧制应变的增加而增加。如果ε从0.035变化到0.2,则黄铜成分的增加更明显,而如果ε从0.2变化至1.2,则戈斯成分的增加更明显。产生了其他纹理成分:位于γ纤维上的E取向{111} <110>和位于β纤维上的S取向{123} <634>。这种演变可与其他低SFEfcc材料相媲美,并且可能是由于剪切带的形成。

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