首页|热处理对1060/7N01/1060轧制复合板显微组织及力学性能的影响

热处理对1060/7N01/1060轧制复合板显微组织及力学性能的影响

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利用475 ℃单道次热轧的方式制备界面结合良好的1060/7N01/1060层状复合板.通过扫描电子显微镜、透射电子显微镜及电子背散射衍射结合硬度和拉伸实验研究层厚比对热轧复合板显微组织和力学性能的影响.此外,对比研究冷轧前热处理(固溶处理及峰值时效)对冷轧复合板显微组织和力学性能的影响.结果表明,层厚比对热轧复合板各层显微组织特征影响不大,其力学性能与混合法则理论预测结果一致.相比而言,额外的热处理对冷轧板纯铝层的晶粒尺寸无明显影响,却有助于细化7N01层的晶粒尺寸及弥散、细小析出物的形成,使其具有更显著的细晶强化、析出强化及位错强化效应.
Effect of heat treatment on micro structure and mechanical property of roll-bonded 1060/7N01/1060 laminates
1060/7N01/1060 laminated composites with reliable bonding interfaces were successfully fabricated via single-pass hot rolling at 475 ℃.The effects of layer thickness ratios on microstructure and mechanical property of synthesized laminates were studied using scanning electron microscope,transmission electron microscope and electron backscattered diffraction technique accompanied with hardness and tensile testing.Moreover,microstructure and mechanical property of DCR(direct cold rolling)and ACR(solution annealing and peak ageing plus cold rolling)samples were also explored.The results show that layer thickness ratios have little effect on microstructure of each layer in hot-rolled sheets,and their mechanical properties are consistent with theoretical predictions based on the rule of mixture.In comparison,extra heat treatment has no obvious effect on grain size of pure aluminium layers.However,smaller strip-like grains along with dispersed,finer precipitates are formed in 7N01 layer of ACR samples,leading to stronger grain refinement strengthening,precipitation strengthening and dislocation strengthening.

7N01 aluminium alloypure aluminiumlaminated compositebonding interfaceageingmechanical properties

李顺强、孙国胜、张瑞升、程笑、刘吉梓

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南京理工大学材料科学与工程学院纳米异构材料中心,南京 210094

南京理工大学分析测试中心,南京 210094

7N01铝合金 纯铝 层状复合板 结合界面 时效 力学性能

National Natural Science Foundation of ChinaNatural Science Foundation of Jiangsu Province,ChinaJiangsu Key Laboratory of Advanced Micro & Nano Materials and Technology,China

52171119BK20201308

2024

10.1016/S1003-6326(23)66384-8

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCD
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2024.34(1)
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