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首页> 外文期刊>Journal of Materials Engineering and Performance >Microstructure and Texture of Al-2.5wt.%Mg Processed by Combining Accumulative Roll Bonding and Conventional Rolling
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Microstructure and Texture of Al-2.5wt.%Mg Processed by Combining Accumulative Roll Bonding and Conventional Rolling

机译：累积轧制和常规轧制相结合的Al-2.5wt。％Mg的组织和织构

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摘要

Evolution of microstructure and texture during severe deformation and annealing was studied in Al-2.5%Mg alloy processed by two different routes, namely, monotonic Accumulative Roll Bonding (ARB) and a hybrid route combining ARB and conventional rolling (CR). For this purpose Al-2.5%Mg sheets were subjected to 5 cycles of monotonic ARB (equivalent strain (epsilon(eq)) = 4.0) processing while in the hybrid route (ARB + CR) 3 cycle ARB-processed sheets were further deformed by conventional rolling to 75% reduction in thickness (epsilon(eq) = 4.0). Although formation of ultrafine structure was observed in the two processing routes, the monotonic ARB-processed material showed finer microstructure but weak texture as compared to the ARB + CR-processed material. After complete recrystallization, the ARB + CR-processed material showed weak cube texture ({001}aOE (c) 100 >) but the cube component was almost negligible in the monotonic ARB-processed material-processed material. However, the ND-rotated cube components were stronger in the monotonic ARB-processed material-processed material. The observed differences in the microstructure and texture evolution during deformation and annealing could be explained by the characteristic differences of the two processing routes.
机译：研究了Al-2.5％Mg合金通过两种不同途径加工而成的Al-2.5％Mg合金在剧烈变形和退火过程中的组织和织构演变，即单调累积轧制（ARB）和结合了ARB和常规轧制（CR）的混合途径。为此，对Al-2.5％Mg板材进行5个单调ARB循环（当量应变（ε（eq））= 4.0），而在混合路线（ARB + CR）中，对3个周期的ARB板材进行进一步变形，使其变形。常规轧制至厚度减少75％（ε（eq）= 4.0）。尽管在两种加工路线中均观察到超细结构的形成，但与ARB + CR加工的材料相比，单调ARB加工的材料显示出更好的微观结构，但质地较弱。在完全重结晶后，ARB + CR处理过的材料显示出较弱的立方织构（{001} aOE（c）100>），但在单调ARB处理过的材料处理过的材料中，立方组分几乎可以忽略不计。但是，在单调ARB处理的材料处理材料中，ND旋转的立方体成分更强。观察到的变形和退火过程中微观结构和织构演变的差异可以用两种加工路线的特征差异来解释。

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