Materials Reports  2020, Vol. 34 Issue (Z1): 322-324 |
| METALS AND METAL MATRIX COMPOSITES |
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| Effect of Hot Rolling Process on Microstructure and Properties of Al-Cu-Mg Alloy |
| HUANG Tongjian1,2, CHAO Daiyi1,2, SONG Xiaolin1, ZHANG Wei1, WANG Zhixiong1, ZHANG Hua1, LYU Zhengfeng1,2
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1 Shandong Nanshan Aluminum Co., Ltd., Longkou 265713, China;
2 National Engineering Research Center for Plastic Working of Aluminium Alloys, Longkou 265713, China |
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Abstract In this paper, the effects of several hot rolling parameters on grain microstructure, ultrasonic inspection noise and tensile properties of the alloy were discussed. The results showed that the hot rolling passes and final rolling temperature had certain effects on the grain structure and ultrasonic inspection noise of the alloy. After 15 hot rolling passes, the higher final rolling temperature, the more uneven of the grain size distribution, the lower the mechanical properties, and the worse ultrasonic inspection noise. After 35 hot rolling passes, the fine and uniform grain size and the higher the mechanical property were obtained by low final rolling temperature. The uneven growth of grain size, the decrease of mechanical pro-perties and the problem of ultrasonic inspection noise were found after increasing the final rolling temperature. Accordingly that after multiple hot rolling (the final rolling temperature was 300 ℃), after solid solution quenching, 2.5% prestretching and natural aging for 96 h, the grain size becomes fine and uniform, and the mechanical properties was higher, and there was no ultrasonic flaw detection noise problem.
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Published: 01 July 2020
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| About author:: Tongjian Huang, graduated from Lanzhou University of Technology in 2005 with a bachelor's degree in metal materials, Engineer. Mainly engaged in rolling deformation technology research and development of aviation aluminum alloy ; Daiyi Chao received his master of engineering in environmental and material engineering from Yantai University in June 2013. From September 2013 to March 2017, he studied for doctorate in School of Materials Science and Engineering, Harbin Institute of Technology. Mainly engaged in heat treatment and deformation process of stainless steel and high strength aluminum alloy. At present, he is a failure analysis expert of Chines Failure Analysis Institution of CMES. |
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