Microstructural evolution of aluminum alloy 7B04 thick plate by various thermal treatments
The microstructure of an AA 7B04 alloy in the form of plate was investigated using differential scanning calorimetry （DSC） and TEM analysis technologies. Tensile properties and electrical conductivity of AA 7B04 under various heat treatment conditions were also presented. The results reveal that pea...
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| Published in | Transactions of Nonferrous Metals Society of China Vol. 18; no. 1; pp. 40 - 45 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier Ltd
01.02.2008
State Key Laboratory for Fabrication and Processing of Non-ferrous Metals,General Research Institute for Non-ferrous Metals, Beijing 100088, China |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1003-6326 |
| DOI | 10.1016/S1003-6326(08)60008-4 |
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| Abstract | The microstructure of an AA 7B04 alloy in the form of plate was investigated using differential scanning calorimetry （DSC） and TEM analysis technologies. Tensile properties and electrical conductivity of AA 7B04 under various heat treatment conditions were also presented. The results reveal that peak-aged microstructure contains GP zones and η＇ precipitates predominantly. After retrogressing and reaging（RRA）, the η＇ and η precipitates disperse in the alloy matrix, and the η precipitates distribute coarsely and sparsely, decorating the grain boundaries, together with precipitate free zones（PFZs） around them. It is also shown that selecting of suitable heat treatments can provide optimal precipitates in matrix and at grain boundaries, which gives rise to a combination of high strength and stress corrosion cracking（SCC） resistance in such materials. |
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| AbstractList | TG1; The microstructure of an AA 7B04 alloy in the form of plate was investigated using differential scanning calorimetry (DSC) and TEM analysis technologies. Tensile properties and electrical conductivity of AA 7B04 under various heat treatment conditions were also presented. The results reveal that peak-aged microstructure contains GP zones and η' precipitates predominantly. After retrogressing and reaging(RRA), the η' and η precipitates disperse in the alloy matrix, and the η precipitates distribute coarsely and sparsely, decorating the grain boundaries, together with precipitate free zones(PFZs) around them. It is also shown that selecting of suitable heat treatments can provide optimal precipitates in matrix and at grain boundaries, which gives rise to a combination of high strength and stress corrosion cracking(SCC) resistance in such materials. The microstructure of an AA 7B04 alloy in the form of plate was investigated using differential scanning calorimetry (DSC) and TEM analysis technologies. Tensile properties and electrical conductivity of AA 7B04 under various heat treatment conditions were also presented. The results reveal that peak-aged microstructure contains GP zones and η′ precipitates predominantly. After retrogressing and reaging(RRA), the η′ and η precipitates disperse in the alloy matrix, and the η precipitates distribute coarsely and sparsely, decorating the grain boundaries, together with precipitate free zones(PFZs) around them. It is also shown that selecting of suitable heat treatments can provide optimal precipitates in matrix and at grain boundaries, which gives rise to a combination of high strength and stress corrosion cracking(SCC) resistance in such materials. The microstructure of an AA 7B04 alloy in the form of plate was investigated using differential scanning calorimetry （DSC） and TEM analysis technologies. Tensile properties and electrical conductivity of AA 7B04 under various heat treatment conditions were also presented. The results reveal that peak-aged microstructure contains GP zones and η＇ precipitates predominantly. After retrogressing and reaging（RRA）, the η＇ and η precipitates disperse in the alloy matrix, and the η precipitates distribute coarsely and sparsely, decorating the grain boundaries, together with precipitate free zones（PFZs） around them. It is also shown that selecting of suitable heat treatments can provide optimal precipitates in matrix and at grain boundaries, which gives rise to a combination of high strength and stress corrosion cracking（SCC） resistance in such materials. The microstructure of an AA 7B04 alloy in the form of plate was investigated using differential scanning calorimetry (DSC) and TEM analysis technologies. Tensile properties and electrical conductivity of AA 7B04 under various heat treatment conditions were also presented. The results reveal that peak-aged microstructure contains GP zones and eta' precipitates predominantly. After retrogressing and reaging(RRA), the eta' and eta precipitates disperse in the alloy matrix, and the eta precipitates distribute coarsely and sparsely, decorating the grain boundaries, together with precipitate free zones(PFZs) around them. It is also shown that selecting of suitable heat treatments can provide optimal precipitates in matrix and at grain boundaries, which gives rise to a combination of high strength and stress corrosion cracking(SCC) resistance in such materials. |
| Author | 李志辉 熊柏青 张永安 朱宝宏 王峰 刘红伟 |
| AuthorAffiliation | State Key Laboratory for Fabrication and Processing of Non-ferrous Metals, General Research Institute for Non-ferrous Metals, Beijing 100088, China |
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| CitedBy_id | crossref_primary_10_1007_s40195_014_0122_7 crossref_primary_10_1016_j_jmrt_2020_08_076 crossref_primary_10_1016_j_msea_2012_06_064 crossref_primary_10_1051_matecconf_20152112006 crossref_primary_10_1515_ijmr_2020_8150 crossref_primary_10_1051_mfreview_2015022 crossref_primary_10_2478_tar_2024_0015 crossref_primary_10_1016_S1003_6326_16_64122_5 crossref_primary_10_5006_4380 crossref_primary_10_1007_s12598_018_1083_1 crossref_primary_10_1016_j_msea_2016_12_099 crossref_primary_10_3139_146_111089 crossref_primary_10_1016_S1875_5372_17_30094_2 crossref_primary_10_1016_j_msea_2011_10_068 crossref_primary_10_1016_S1003_6326_18_64861_7 crossref_primary_10_1016_S1003_6326_11_61432_5 |
| Cites_doi | 10.1016/j.matchar.2007.01.006 10.1016/0956-7151(94)90406-5 10.1007/s11661-001-0117-7 10.5006/1.3277583 10.1016/j.matdes.2006.01.021 10.4028/www.scientific.net/MSF.519-521.853 10.1007/s11041-005-0066-7 10.1016/j.actamat.2004.06.025 10.1016/S0921-5093(00)01247-8 10.1007/BF02645554 10.4028/www.scientific.net/MSF.519-521.901 10.1016/0921-5093(91)90369-X 10.1016/S0010-938X(98)00002-X 10.1016/j.ultramic.2006.01.009 |
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| Snippet | The microstructure of an AA 7B04 alloy in the form of plate was investigated using differential scanning calorimetry （DSC） and TEM analysis technologies.... The microstructure of an AA 7B04 alloy in the form of plate was investigated using differential scanning calorimetry (DSC) and TEM analysis technologies.... TG1; The microstructure of an AA 7B04 alloy in the form of plate was investigated using differential scanning calorimetry (DSC) and TEM analysis technologies.... |
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| SubjectTerms | 7B04 aluminum alloy microstructure Al alloy DSC properties TEM 显微结构 热处理 金属学 铝合金 |
| Title | Microstructural evolution of aluminum alloy 7B04 thick plate by various thermal treatments |
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