AA8079双零铝箔的中间退火工艺
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摘要
用扫描电镜、透射电镜研究了不同退火工艺条件下0. 04 mm厚AA8079冷轧态铝箔第二相的演变规律,并测试了其显微硬度值的变化情况。结果表明,当退火工艺为200℃×6 h时,析出短棒状的β_b(AlFeSi)相和细小粒状α_c(AlFeSi)相;当退火工艺为350℃×6 h时,发生了β_P(AlFeSi)相到α_c(AlFeSi)相转变,且析出型α_c(AlFeSi)相有些在晶内析出,有些沿位错线附近析出;AA079铝箔的最佳中间退火工艺为400℃×6 h。
The evolution law of the second phase under different annealing conditions was studied by scanning electron microscopy and transmission electron microscopy( TEM) with the thickness of 0. 04 mm AA8079 cold rolled aluminum foil. Change of the microhardness value was tested. The results show that when the annealing process is 200 ℃ × 6 h,the short-bar-like βb( AlFeSi) phase and the fine particle α_c( AlFeSi) phase are precipitated. When the annealing process is 350 ℃ × 6 h,the phase transformation of β_P( AlFeSi) to α_c( AlFeSi) occurs,and some of the precipitation type α_c( AlFeSi) phase is in the crystal,some precipitated along the dislocations. The optimum intermediate annealing process of AA079 aluminum foil is 400 ℃ × 6 h.
The evolution law of the second phase under different annealing conditions was studied by scanning electron microscopy and transmission electron microscopy( TEM) with the thickness of 0. 04 mm AA8079 cold rolled aluminum foil. Change of the microhardness value was tested. The results show that when the annealing process is 200 ℃ × 6 h,the short-bar-like βb( AlFeSi) phase and the fine particle α_c( AlFeSi) phase are precipitated. When the annealing process is 350 ℃ × 6 h,the phase transformation of β_P( AlFeSi) to α_c( AlFeSi) occurs,and some of the precipitation type α_c( AlFeSi) phase is in the crystal,some precipitated along the dislocations. The optimum intermediate annealing process of AA079 aluminum foil is 400 ℃ × 6 h.
引文
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[8]汤爱涛,潘复生,张静.AA1235铝箔坯料退火工艺和显微组织的研究[J].轻合金加工技术,1999,27(7):20-22.Tang Aitao,Pan Fusheng,Zhang Jing.Investigation on the annealing process and microstructure of AA1235 sheets for aluminium foils[J].Light Alloy Fabrication Technology,1999,27(7):20-22.
[9]李怀武,任书卿.提高铸轧坯料质量降低双零铝箔针孔率[J].轻合金加工技术,2012(2):27-30.Li Huaiwu,Ren Shuqing.Measures on reducing pinhole rate of double rolling aluminum foil being produced with continuous cast stock[J].Light Alloy Fabrication Technology,2012(2):27-30.
[10]时国成.AA8079铝箔坯料显微组织及性能研究[D].郑州:郑州大学,2015.
[2]张静,彭建,潘复生.工业纯铝中的化合物相[J].轻合金加工技术,2000,28(5):1-5.Zhang Jing,Peng Jian,Pan Fusheng.Intermetallic compounds in commercial-purity aluminum[J].Light Alloy Fabrication Technology,2000,28(5):1-5.
[3]Allen C M,O'Reilly K A Q,Cantor B,et al.Intermetallic phase selection in 1×××Al alloys[J].Progress in Materials Science,1998,43(2):89-170.
[4]Jarle A S.Electron crystallography of aluminium alloy phases[J].Zeitschrift Für Kristallographie/International Journal for Structural Physical and Chemical Aspects of Crystalline Materials,2003,218(4):293-307.
[5]张静,潘复生.铝箔生产中铝箔毛料的组织控制[C]//全国铝箔技术与营销研讨会文集.2002:82-83.
[6]Bagshaw M J,Hunt J D,Jordan R M.A steady state model for roll casting[J].Modeling and Control of Casting and Welding Processes,1986,3:135-141.
[7]Browne D J.The measurement of heat transfer coefficients in roll casting[D].Oxford:Oxford University,1989.
[8]汤爱涛,潘复生,张静.AA1235铝箔坯料退火工艺和显微组织的研究[J].轻合金加工技术,1999,27(7):20-22.Tang Aitao,Pan Fusheng,Zhang Jing.Investigation on the annealing process and microstructure of AA1235 sheets for aluminium foils[J].Light Alloy Fabrication Technology,1999,27(7):20-22.
[9]李怀武,任书卿.提高铸轧坯料质量降低双零铝箔针孔率[J].轻合金加工技术,2012(2):27-30.Li Huaiwu,Ren Shuqing.Measures on reducing pinhole rate of double rolling aluminum foil being produced with continuous cast stock[J].Light Alloy Fabrication Technology,2012(2):27-30.
[10]时国成.AA8079铝箔坯料显微组织及性能研究[D].郑州:郑州大学,2015.