Materials Reports  2020, Vol. 34 Issue (Z1): 325-327 |
| METALS AND METAL MATRIX COMPOSITES |
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| Study on Homogenization Process of Large Size Al-Cu-Mg-Mn Alloy Ingot |
| HUANG Tongjian1,2, QIN Yu1, CHAO Daiyi1,2, WANG Zhixiong1, SONG Xiaolin1, ZHANG Hua1, CHENG Rence1,2
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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 The microstructure evolution and property of large size Al-Cu-Mg-Mn alloy ingot during different homogenization were studied by optical microscopy (OM), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The results showed that the dendrite segregation in the as-cast alloy was more serious from the core region to the edge region. Near the low melting point homogenizing annealing and the proper time of homogenization was selected, which lead to the dendrite segregation was basically eliminated and the distribution of components was relatively uniform. Homogenization at 500 ℃/36 h, the residual second phase content was 0.88%. After the rolling deformation, the T42-state tensile strength of the alloy reached 480 MPa, the yield strength reached 327 MPa, and the elongation reached 19%.
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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 high strength aluminum alloy. At present, he is a failure analysis expert of Chines Failure Analysis Institution of CMES. |
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