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Dynamic compressive behaviour and microstructural evolution of extrusion-shear deformed ZC61 alloy
Materials Science and Technology ( IF 1.8 ) Pub Date : 2020-05-04 , DOI: 10.1080/02670836.2020.1757803
Zhi Wang 1, 2 , Gengsheng Cao 1, 2 , Sheng Yao 1, 2 , Le Zhou 1, 2 , Pingli Mao 1, 2 , Feng Wang 1, 2 , Zheng Liu 1, 2
Affiliation  

In this study, a novel extrusion-shear (ES) deformation method was developed to prepare ZC61 alloy. The dynamic mechanical properties and microstructure of specimen were studied at a temperature in the range of 25–350°C and strain rate of 1300 s−1. The results demonstrated by ES exhibited a strong {0001} basal texture, resulting in the obvious anisotropy. The shapes of stress–strain curves of samples exhibited significant differences at low temperature (<250 °C) when compression was carried out along extrusion direction (ED) and extrusion radial direction (ERD). Dynamic recrystallization occurred at the loading temperature of 300°C along ED due to the energy provided by high-density dislocation in twins. However, no obvious dynamic recrystallization was observed for the ERD samples.

中文翻译:

挤压-剪切变形ZC61合金的动态压缩行为和显微组织演变

在这项研究中,开发了一种新的挤压剪切 (ES) 变形方法来制备 ZC61 合金。在25-350°C的温度范围和1300 s-1的应变速率下研究了试样的动态力学性能和微观结构。ES证明的结果显示出强烈的{0001}基底织构,导致明显的各向异性。当沿挤压方向(ED)和挤压径向(ERD)进行压缩时,样品的应力-应变曲线形状在低温(<250°C)下表现出显着差异。由于孪晶中的高密度位错提供的能量,沿 ED 在 300°C 的加载温度下发生动态再结晶。然而,ERD 样品没有观察到明显的动态再结晶。
更新日期:2020-05-04
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