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| 7050-T7452高强铝合金的开坯与锻造工艺研究 | |
| 引用本文： | 孙燚,李付国,李志杰,唐军,彭富华. 7050-T7452高强铝合金的开坯与锻造工艺研究[J]. 锻压装备与制造技术, 2010, 45(6) |
| 作者姓名： | 孙燚 李付国 李志杰 唐军 彭富华 |
| 作者单位： | 1. 西北工业大学,材料学院,陕西,西安,710072 2. 陕西宏远航空锻造有限公司,陕西,咸阳,713801 3. 成都飞机工业集团有限责任公司,四川,成都,610091 |
| 摘 要： | 为了研究7050高强铝合金开坯工艺的变形均匀性及锻件的断裂韧性,采用数值模拟、微观组织分析及紧凑拉伸试样的KIC试验等,分析研究7050高强铝合金铸坯改锻和挤压坯锻造的变形均匀性、显微组织和断裂韧性,得到了两种开坯工艺条件下坯料的平均等效应变、变形均匀系数、晶粒尺寸大小及分布和断裂韧度值。结果表明:铸坯改锻工艺的变形均匀性较好,其平均等效应变约为7.2,变形均匀系数约为0.475;挤压坯锻造工艺的变形均匀性较差,其平均等效应变约为1.9,变形均匀系数约为0.954;铸坯改锻工艺的平均晶粒尺寸与挤压坯锻造工艺基本相当,约为7.5μm,但铸坯改锻工艺的晶粒尺寸比挤压坯锻造更均匀;铸坯改锻工艺下锻件的KIC满足AMS4108F标准要求,而挤压坯锻造工艺不满足,其原因是挤压坯锻造后脆性较大,并残留有挤压织构。 |
| 关 键 词： | 机械制造 开坯锻造 7050铝合金 数值模拟 |
Cogging and Forging Techniques for 7050-T7452 High-strength Aluminum Alloy |
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| SUN Yi,LI Fuguo,LI Zhijie,TANG Jun,PENG Fuhua. Cogging and Forging Techniques for 7050-T7452 High-strength Aluminum Alloy[J]. China Metalforming Equipment & Manufacturing Technology, 2010, 45(6) | |
| Authors: | SUN Yi LI Fuguo LI Zhijie TANG Jun PENG Fuhua |
| Affiliation: | SUN Yi1,LI Fuguo1,LI Zhijie2,TANG Jun2,PENG Fuhua3(1.School of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an 710072,Shaanxi China,2.Shaanxi Hong Yuan Aviation Forging Company Ltd.,Xianyang 713801,3.Chengdu Aircraft Industrial(Group) Limited Liability Company,Chengdu 610091,Sichuan China) |
| Abstract: | The numerical simulation,microstructure analysis and KIC testing of compact-tension specimen have been employed to explore the deformation uniformity,microstructure and fracture toughness of techniques in forging process for 7050 high strength aluminum alloy ingot and extruded stock.The mean value of equivalent strain,deformation uniformity coefficient,and dimension & distribution of grains have been achieved as well as magnitude of fracture toughness in condition of the former two different techniques resp... |
| Keywords: | Cogging and forging 7050 aluminum alloy Numerical simulation |
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