纯锌单晶弯曲变形行为的取向依赖性

Journal of the Japan Institute of Metals and Materials Pub Date : 2022-01-01 DOI:10.2320/jinstmet.j2021040

S. Furukawa, K. Oka, M. Tsushida, H. Kitahara, S. Ando

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摘要

对不同取向的纯锌单晶进行三点弯曲试验，研究取向对其弯曲变形行为的影响。基底面与中性面平行，试件因基底滑移而变形，变形后形成海鸥形。另一方面，中性面垂直于基面和中性轴垂直于[0001]的试样由于二级锥体©c + aª滑移，f10 (cid:2)12 g孪晶和f10 (cid:2)12 g孪晶内的基底滑移而变形，呈V形。纯锌单晶的弯曲变形行为表现出很强的取向依赖性。当中性面和中性轴分别垂直于基面和基面时，纯锌单晶的弯曲变形行为与纯镁单晶有所不同[0001]。(doi: 10.2320

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Orientation Dependence on Bending Deformation Behavior of Pure Zinc Single Crystals

Three-point bending tests were performed on pure zinc single crystals with di ﬀ erent crystal orientations to investigate orientation dependence on bending deformation behavior. With basal planes parallel to the neutral planes, the specimens deformed due to basal slips and formed a gull shape after deformation. On the other hand, specimens whose neutral planes are perpendicular to the basal planes and neutral axes are perpendicular to [0001] deformed due to second order pyramidal © c + a ª slips, f 10(cid:2)12 g twinning and basal slips within f 10(cid:2)12 g twins, displaying a V shape. The bending deformation behavior of pure zinc single crystals was found to show strong orientation dependence. Also, the bending deformation behavior of pure zinc single crystals was found to di ﬀ er from that of pure magnesium single crystals when the neutral plane and neutral axis are respectively perpendicular to the basal planes and [0001]. [doi:10.2320

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Journal of the Japan Institute of Metals and Materials

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