[1]董澎源,李元東,李明,等.T6熱處理對A356/6082鋁合金復合板界面、組織及力學性能的影響 [J].中國材料進展,2019,(02):177-182.
DONG Pengyuan,LI Yuandong,LI Ming,et al.Effect of T6 Heat Treatment on the Interfacial Microstructure and Mechanical Properties of A356/6082 Aluminum Alloy Composite Plate [J].MATERIALS CHINA,2019,(02):177-182.
點擊復制
T6熱處理對A356/6082鋁合金復合板界面、組織及力學性能的影響
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中國材料進展[ISSN:1674-3962/CN:61-1473/TG]
- 卷:
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- 期數:
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2019年第02期
- 頁碼:
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177-182
- 欄目:
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研究報告
- 出版日期:
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2019-02-28
文章信息/Info
- Title:
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Effect of T6 Heat Treatment on the Interfacial Microstructure and Mechanical Properties of A356/6082 Aluminum Alloy Composite Plate
- 作者:
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董澎源1; 李元東1; 2; 李明1; 楊世杰1; 李嘉銘1
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（1.蘭州理工大學 省部共建有色金屬先進加工與再利用國家重點實驗室，甘肅 蘭州 730050）
（2. 蘭州理工大學 有色金屬合金省部共建教育部重點實驗室，甘肅 蘭州 730050）
- Author(s):
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DONG Pengyuan1; LI Yuandong1; 2; LI Ming1; YANG Shijie1; LI Jiaming1
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(1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China)
（2. Key Laboratory of Nonferrous Metal Alloys of Ministry of Education, Lanzhou University of Technology, Lanzhou 730050,China)
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- 關鍵詞:
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液-固軋制; 熱處理; 復合板; 界面組織; 力學性能
- Keywords:
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liquid-solid rolling; heat treatment; composite plate; interface microstructure; mechanical properties
- 文獻標志碼:
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A
- 摘要:
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采用液-固軋制復合技術制備A356/6082層狀復合板，并對其進行T6熱處理。通過光學顯微鏡（OM）、掃描電鏡（SEM）、剪切試驗、顯微硬度測試等表征手段對比分析了T6熱處理前后復合板顯微組織變化、界面元素擴散規律以及剪切強度和硬度等力學性能特征。結果表明：T6熱處理后，層片狀共晶硅形態發生球化，界面附近的共晶硅團聚現象消失且組織更為均勻；界面區Mg元素明顯擴散，結合線消失；復合板剪切強度從91.6 MPa提高到139.2 MPa，界面區域和基體的顯微硬度均得到明顯改善，A356側的平均硬度值達到1102.5 MPa左右，6082側的平均硬度值達到851.6 MPa左右，且沿A356至6082垂直界面方向其顯微硬度值逐漸下降。
- Abstract:
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A356/6082 composite plate was fabricated by liquid-solid rolling composite technique and subsequent T6 heat treatment.Microstructure changes of composite plate, interfacial element diffusion, mechanical properties of the shear strength and micro-hardness before and after T6 heat treatment were researched by optical microscopy (OM), scanning electron microscope (SEM), microhardness measurements and shear tests. The results showed that the morphology of eutectic silicon in the A356 aluminum alloy changes from long, coarse platelike to fine spherical after T6 heat treatment. The eutectic silicon agglomeration near the interface disappeared and the microstructure is more homogeneous. Near the interface, the Mg elements obviously diffuse. In addition, the shear strength of composite plate increases from 91.6 to 139.2 MPa, and the micro-hardness near the interface and the substrate both increases significantly. The average hardness value of the A356 side reaches about 1102.5 MPa and the average hardness value of the 6082 side reaches about 851.6 MPa. Micro-hardness value of the A356 side to the 6082 side decreases gradually along the vertical interface.
更新日期/Last Update:
2019-03-19