材料研究学报  2013, Vol. 27 Issue (2): 144-148

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7150-T7751铝合金厚板性能的不均匀性*

丛福官1,2 赵刚1 田妮1 李瑞锋1

1. 东北大学 材料各向异性与织构教育部重点实验室 沈阳 110004 2. 东北轻合金有限责任公司 哈尔滨 150060

Inhomogeneity of Properties of 7150-T7751 Aluminum Alloy Thick Plate

CONG Fuguan1, 2 ZHAO Gang1** TIAN Ni1 LI Ruifeng1

1. Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004 2. Northeast Light Alloy Co., Ltd., Harbin 150060

丛福官, 赵刚, 田妮, 李瑞锋. 7150-T7751铝合金厚板性能的不均匀性*[J]. 材料研究学报, 2013, 27(2): 144-148.
CONG Fuguan, ZHAO Gang, TIAN Ni, LI Ruifeng. Inhomogeneity of Properties of 7150-T7751 Aluminum Alloy Thick Plate[J]. Chinese Journal of Materials Research, 2013, 27(2): 144-148.

摘要 参考文献 相关文章 Metrics 全文: PDF(3880 KB)   摘要: 摘 要 采用拉伸性能、显微组织、化学成分以及扫描电镜组织、电子背散射衍射和织构分析等手段, 研究了80 mm厚7150-T7751合金厚板不同厚度层纵向和横向的组织和性能。结果表明: 80 mm厚7150-T7751合金厚板不同厚度层的组织和力学性能有明显的不同, 且并非成分宏观偏析造成的; 厚板内部的力学性能存在各向异性, 且不同厚度层各向异性的特点不同, 板材中心层的纵向强度显著比横向强度大, 板材1/4厚度层不仅其纵向强度最小而且还小于其横向强度; 板材的中心层的轧制变形程度虽小, 但固溶时效后的织构却较强; 7150-T7751合金具有合适织构的粗大长状再结晶晶粒与细小等轴晶组织匹配时, 在沿粗大晶粒长度的方向可获得较高的强度。 关键词 ： 金属材料,  7150铝合金,  厚板,  各向异性,  电子背散射衍射,  织构     Abstract：ABSTRUCT The microstructure and property of 80mm thick 7150-T7751 aluminum alloy plate in different layers were investigated by tensile properties, optical microscopy(OM), composition analysis, scanning electron microscopy(SEM), electron back-scattering diffraction(EBSD) and texture tests. The results show that the microstructure and tensile property in different layers of 7150-T7751 aluminum alloy of 80mm thick are inhomogeneous and the inhomogeneity has no correlation with macrosegregstion of the composition. The tensile property show obvious anisotropy in the plate and the characteristics of anisotropy at different layers are different. The strength of the rolling direction at the center is higher than that of the transverse direction. The strength of the rolling direction at the quarter is the smallest and is lower than that of the transverse direction. The texture of solution and ageing plate is stronger although the rolling deformation degree is smaller at the center of plate. The higher strength can be obtained along the long direction of coarse grain when the coarse and long recrystallization grains and the fine equiaxed grains are matching in 7150-T7751 aluminium alloy plate. Key words： metallic materials    7150 aluminum alloy    thick plate    anisotropy    EBSD    texture      ZTFLH:  TG146   服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 丛福官 赵刚 田妮 李瑞锋 44.8K 链接本文: https://www.cjmr.org/CN/      或      https://www.cjmr.org/CN/Y2013/V27/I2/144 1 M. 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