| Microstructure and Mechanical Properties of Laser Deposition Repaired Cast ZL114A Aluminium Alloy | |
| Alternative Title | Microstructure and Mechanical Properties of Laser Deposition Repaired Cast ZL114A Aluminium Alloy |
| Qin Lanyun; Pang Shuang; Yang Guang; Wang Chao; Wang Wei | |
| 2017 | |
| Source Publication | RARE METAL MATERIALS AND ENGINEERING
 |
| ISSN | 1002-185X |
| Volume | 46Issue:6Pages:1596-1601 |
| Abstract | ZL114A cast aluminum alloy with pre-groove damage was repaired by laser deposition repair (LDR). Microstructure and distribution law of laser deposition repaired zone before and after heat treatment were analyzed, and then microhardness and room temperature tensile properties of the samples were tested. The results show that a good metallurgical combination is formed between the repaired zone and the substrate. At the bottom of the deposition layer, alpha-Al columnar dendrites, which are approximately parallel to the normal directions of the fusion line appear with epitaxial growth feature. The primary dendrite arm spacing is about 15.7 mu m, and the distance between secondary dendrites is about 5.27 mu M. Eutectic structure presents as bifurcated rod or block, and continuously distributes in the gaps among dendrite crystals, and alpha-Al columnar dendrites transforms into equiaxed crystal at the top of the last deposition layer. After the heat treatment, secondary dendrite arm of columnar dendrite is expansive because of atomic diffusion, and eutectic Si granulation is clear, the particle size is about 4.93 mu m, and part of them distribute uniformly on both sides of primary dendritic arm. The hardness of repaired area increases by 1.6 times compared with that of the deposited sample after heat treatment, and the room temperature tensile properties are better than those of cast substrates. |
| Keyword | laser deposition repair (LDR) ZL114A aluminium alloy hardness tensile property |
| Indexed By | CSCD |
| Language | 英语 |
| CSCD ID | CSCD:6014011 |
| Citation statistics |
Cited Times:5[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/157865 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Qin Lanyun,Pang Shuang,Yang Guang,et al. Microstructure and Mechanical Properties of Laser Deposition Repaired Cast ZL114A Aluminium Alloy[J]. RARE METAL MATERIALS AND ENGINEERING,2017,46(6):1596-1601. |
| APA | Qin Lanyun,Pang Shuang,Yang Guang,Wang Chao,&Wang Wei.(2017).Microstructure and Mechanical Properties of Laser Deposition Repaired Cast ZL114A Aluminium Alloy.RARE METAL MATERIALS AND ENGINEERING,46(6),1596-1601. |
| MLA | Qin Lanyun,et al."Microstructure and Mechanical Properties of Laser Deposition Repaired Cast ZL114A Aluminium Alloy".RARE METAL MATERIALS AND ENGINEERING 46.6(2017):1596-1601. |
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