| 变形程度对复杂铝合金锻件组织性能的影响 |
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| 引用本文： | 张艳秋,徐福昌,单德彬.变形程度对复杂铝合金锻件组织性能的影响[J].材料科学与工艺,2009(6):806-809. |
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| 作者姓名： | 张艳秋 徐福昌 单德彬 |
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| 作者单位： | 哈尔滨工业大学材料科学与工程学院;哈尔滨工程大学工程训练中心; |
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| 基金项目： | 国家自然科学基金资助项目(50775051) |
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| 摘 要： | 为确定最佳成形工艺,通过拉伸试验、金相观察、TEM和SEM观察等方法,研究了不同制坯变形程度对7A09铝合金复杂筋板类锻件组织性能的影响.实验结果表明:随着制坯变形量的增加,所得锻件的强度和硬度升高,而塑性和抗应力腐蚀性能下降;随制坯变形程度的增加,热变形时储存的变形能增多,可以得到更加细小的晶粒,而且储存变形能的增多有利于固溶程度的提高和强化相的析出,因而可以提高锻件的强度和硬度.晶粒细化使晶界面积增加是造成电导率降低的主要因素.因此,在设计成形工艺时,应根据零件按上述规律来调整变形程度.
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| 关 键 词： | 筋板类锻件 7A09铝合金 变形程度 组织和性能 |
Influence of deformation extent on the microstructure and mechanical properties of aluminum alloy forging with complex shape |
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| ZHANG Yan-qiu,XU Fu-chang,SHAN De-bin.Influence of deformation extent on the microstructure and mechanical properties of aluminum alloy forging with complex shape[J].Materials Science and Technology,2009(6):806-809. |
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| Authors: | ZHANG Yan-qiu XU Fu-chang SHAN De-bin |
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| Affiliation: | ZHANG Yan-qiu1,2,XU Fu-chang1,SHAN De-bin1(1. School of Materials Science , Engineering,Harbin Institute of Technology,Harbin 150001,China,2. Engineering Training Center,Harbin Engineering University,China) |
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| Abstract: | Influence of deformation extent of preforming on the microstructure and mechanical properties of 7A09 aluminum alloy rib-web type forging with complex shape was investigated by methods of tensile test,metallographic observation,TEM and SEM observation in order to obtain the optimal forming process. Results show that the intensity and the hardness are increased with the incremental deformation extent of performing,while the plasticity and the stress corrosion resistance are decreased. With the increase of de... |
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| Keywords: | rib-web type forging 7A09 aluminum alloy deformation extent microstructure and mechanical properties |
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