Current Views: 82995
Current Downloads: 43857
Environment and Resource
ISSN Print:2707-2398
ISSN Online:2707-2401
Contact Editorial Office
Subscribe to the latest published information from SCISCAN
拉伸矫直工艺对5052铝合金显微组织和力学性能影响
Effect of Stretch Straightening Process on Microstructure and Mechanical Properties of 5052 Aluminum Alloy
-
Information:
1. 重庆科技大学冶金与动力工程学院，重庆； 2. 宝山钢铁股份有限公司中央研究院，上海
-
Keywords:
Aluminum alloy; Tension straightening; Microstructure; Mechanical properties铝合金; 拉伸矫直; 显微组织; 力学性能
- Abstract: Using annealed 5052 aluminum alloy plates as the research subject, this study systematically investigates the influence of stretch leveling process parameters on microstructure and mechanical properties. Employing a three-roll stretch leveling device, a three-factor, three-level orthogonal experiment was designed, incorporating plate thickness, tension, and reduction of thickness. Tensile tests, optical microscopy, and EBSD analysis were conducted to evaluate elongation, mechanical properties, and microstructural evolution under different process conditions. Results indicate that sheet thickness, tension, and reduction all influence stretch-straightening elongation, with tension having the most significant effect, followed by reduction, while sheet thickness has a minor impact. Increasing tension and reduction promotes effective plastic elongation. Stretch-straightening treatment markedly enhances the yield strength and tensile strength of 5052 aluminum alloy, while elongation decreases correspondingly, exhibiting typical work-hardening characteristics. Microstructural analysis revealed no significant grain size changes before and after stretch leveling, with no recrystallization occurring. The changes in mechanical properties primarily stemmed from increased dislocation density, intra-grain orientation distortion, and sub-structure evolution. Different sheet thicknesses exhibited varying responses to stretch leveling process parameters, necessitating process optimization tailored to sheet specifications. These findings provide experimental basis for establishing optimal draw-straightening process parameters for thin 5052 aluminum alloy sheets. 以退火态5052铝合金板为研究对象，系统研究拉伸矫直工艺参数对其显微组织与力学性能的影响规律。采用三辊拉伸矫直装置，设计包含板材厚度、张力和压下量的三因素三水平正交实验，通过拉伸试验、光学显微镜及EBSD分析不同工艺条件下材料的延伸率、力学性能及显微组织演变。结果表明，板材厚度、张力和压下量均对拉矫延伸率产生影响，其中张力影响最为显著，其次为压下量，板材厚度影响较小；提高张力和压下量有利于获得有效塑性延伸。拉伸矫直处理使5052铝合金屈服强度和抗拉强度明显提高，延伸率相应下降，表现出典型的加工硬化特征。显微组织分析表明，拉矫前后晶粒尺寸变化不明显，未发生再结晶，力学性能变化主要源于位错密度增加及晶内取向畸变和亚结构演化。不同厚度板材对拉矫工艺参数的响应存在差异，需结合板材规格进行工艺优化。研究结果为5052铝合金薄板拉伸矫直工艺参数的合理设定提供了实验依据。
- DOI: 10.35534/er.0802029 (registering DOI)
- Cite: 王科勇，曹零勇，曹高辉，等．拉伸矫直工艺对5052铝合金显微组织和力学性能影响［J］．环境与资源，2026，8（2）：214-219.
