The tungsten(W) was prepared by cold isostatic pressing and sintering, and its characteristics were further enhanced by cold rolling in this paper. The microstructure and textural evolution of cold-rolled and annealed W were primarily studied, and the slip system and dislocations were also deeply researched. The study reveals that grain boundaries in cold-rolled W and samples annealed at 1200 K have small angles of misorientation and high kernel average misorientation (KAM) values, while samples annealed at 1500 K and 1800 K have high angles of misorientation and low KAM values. Low angle grain boundaries (GBs) promote dislocation transfer and improve ductility. After 1800 K annealing, W becomes nearly-equiaxed polyhedrons, with γ-fiber texture dominating. The rolling direction (RD) is better suited for plastic deformation than the transverse direction (TD), but plasticity deteriorates due to changes in microstructure.

中文翻译：

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冷轧W退火过程中的显微组织和织构演变


本文通过冷等静压烧结制备钨(W)，并通过冷轧进一步增强其特性。对冷轧和退火W的显微组织和织构演化进行了初步研究，并对滑移系和位错进行了深入研究。研究表明，冷轧W和1200 K退火样品的晶界具有较小的取向差角和较高的晶粒平均取向差（KAM）值，而1500 K和1800 K退火的样品具有较大的取向差角和较低的KAM值。小角度晶界 (GB) 促进位错转移并提高延展性。经过1800 K退火后，W变成近等轴多面体，以γ纤维织构为主。轧制方向（RD）比横向（TD）更适合塑性变形，但塑性会因微观结构的变化而恶化。