7N01铝合金挤压板的微结构、织构和性能<sup>*</sup>

doi:10.11901/1005.3093.2014.092

材料研究学报

2014, Vol. 28

Issue (7): 541-548 DOI: 10.11901/1005.3093.2014.092

本期目录 | 过刊浏览

7N01铝合金挤压板的微结构、织构和性能^*

黄英^1,²,邓运来^1,²(

),陈龙^1,²,廖飞^1,²,张新明^1,²

1. 中南大学材料科学与工程学院长沙 410083
2. 有色金属材料科学与工程教育部重点实验室长沙 410083

Microstructure, Texture and Property of Extruded 7N01 Aluminum Alloy Plates

Ying HUANG^1,^2,^*,Yunlai DENG^1,²(

),Long CHEN^1,²,Fei LIAO^1,²,Xinming ZHANG^1,²

1. Key Laboratory of Nonferrous Materials Science and Engineering, Changsha 410083
2. Key Laboratory of materials science and engineering of Ministry of education of nonferrous metal

引用本文:

黄英,邓运来,陈龙,廖飞,张新明. 7N01铝合金挤压板的微结构、织构和性能^*[J]. 材料研究学报, 2014, 28(7): 541-548.
Ying HUANG, Yunlai DENG, Long CHEN, Fei LIAO, Xinming ZHANG. Microstructure, Texture and Property of Extruded 7N01 Aluminum Alloy Plates[J]. Chinese Journal of Materials Research, 2014, 28(7): 541-548.

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摘要:

制备了挤压比λ为36和16的7N01铝合金挤压板材, 并分别进行自然时效和人工时效处理。用光学显微镜、扫描电镜、透射电镜、常温拉伸、宏微观织构测试和慢应变拉伸实验对其进行表征, 研究了挤压工艺对合金的力学性能和抗腐蚀性能的影响。结果表明, 不同挤压比的板材在相同时效状态下的组织和性能有明显的差异。大挤压比板材的内部多为细小的再结晶晶粒, 小挤压比板材内部为粗大的亚结构, 因此具有比大挤压比板材更高的抗拉强度和屈服强度。透射电镜观察结果表明, 大挤压比试样内晶界析出相比小挤压比时呈现更明显的断续分布。此外, 挤压比相同的板材人工时效处理后其抗拉强度和延伸率比自然时效板材均有所下降, 其中抗拉强度降低约为5.8%, 但合金的屈服强度得到了显著提高(约为25%); 在挤压比相同的情况下人工时效试样内晶界的析出相呈现断续分布, 因此具有更好的抗腐蚀性能。

关键词 ：金属材料, Al-Zn-Mg合金, 挤压工艺, 时效工艺

Abstract：

The effect of natural and artificial aging treatment on tensile properties and corrosion resistance and on the microstructure and texture was investigated respectively by means of mechanical test and of observation with OM, SEM and TEM etc for aluminum alloy 7N01 plates extruded with different extrusion ratio (λ=36 and16). The results show that after natural and artificial aging there exist significant difference in the microstructure and mechanical property for the above mentioned 7N01 plates. There exist a large number of tiny recrystallized grains in the plate with higher-extrusion ratio, while coarse subgrain structures in the plate with lower-extrusion ratio; the former one possesses higher tensile strength and yield strength rather that the later one; while the precipitates at grain boundaries in the former one seemed much discrete with each other. Meanwhile, for the plates extruded with the same extrusion ratio both the tensile strength and elongation were decreased after artificial aging in comparison to those naturally aged, i.e. tensile strength was about 5.8% lower, however the yield strength increased reversely by about 25%; the precipitates at boundaries seemed also much discrete with each other after artificial aging, and thereby exhibited better corrosion resistance.

Key words： metallic materials Al-Zn-Mg alloy extrusion process aging process

收稿日期: 2014-02-24

基金资助:* 国家重点基础研究发展计划2012CB619500资助项目。;*Supported by the National Basic Research Program of China (973 Program) No. 2012CB619500

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https://www.cjmr.org/CN/10.11901/1005.3093.2014.092 或 https://www.cjmr.org/CN/Y2014/V28/I7/541

表1 试验所用材料的化学成分

表2 不同挤压比λ的挤压板经不同时效处理后的慢拉伸性能及ISSRT值

图1 人工时效状态下不同挤压比的金相组织

图2 人工时效态不同挤压比下试样的ODF

图3 不同挤压比下试样的Recrystallized Fraction图像

图4 不同挤压比试样的EBSD图像

图5 不同挤压比挤压板的极图

图6 不同温度挤压板的第二相分布及能谱分析

图7

图8 7N01铝合金不同挤压比下自然时效试样的透射组织

1	LI Zhou,WANG Zhengan, GUO Mingxing, Study on two-step aging characteristics of large section aluminum alloy 6005A TTP curve and 7005 alloy for rall traffle vchicle, Aluminum Fabrication, 5(152), 24(2003)
1	(李周, 王正安, 郭明星, 轨道交通车辆用大型材铝合金6005A的TTP曲线与7005合金双级时效特性的研究, 铝加工, 5(152), 24(2003))
2	GOU Guoqing,HUANG Nan, CHEN Hui1, MENG Li-chun, WU Pei-pei, Research on stress corrosion behavior of A7N01S-T5 aluminum alloy for high speed train, Materials Science and Technology, 20(4), 1343(2012)
2	(苟国庆, 黄楠, 陈辉, 孟立春, 吴沛沛, 高速列车A7N01S-T5铝合金应力腐蚀行为研究, 材料科学与工艺, 20(4), 1343(2012))
3	Zhang Jianbo,Zhang Yongan, He Zhenbo, Jin Longbing, Zhu Baohong, Li Zhihui, Effect of natural ageing on properties and microstructure of 7N01 aluminum alloys, Chinese Journal of Rare Metals, 36(2), 191(2012)
3	(张建波, 张永安, 何振波, 金龙兵, 朱宝宏, 李志辉, 自然时效对7N01铝合金组织和性能的影响, 稀有金属, 36(2), 191(2012))
4	A. F. Oliveira, M. C. d. B., K. R. Cardoso, D. N. Travessa,The effect of RRA on the strength and SCC resistance on AA7050 and AA7150 aluminium alloys, Materials Science and Engineering A, 379(1-2), 321(2004)
5	G. S.Peng,K. H.C., H. C.Fang,The effect of recrystallization on corrosion and electrochemical behavior of 7150 Al alloy, Materials and Corrosion, 62(1), 35(2011)
6	L. P. Huang, K. H. C., S. Li, M. Song,Influence of high-temperature pre-precipitation on local corrosion behaviors of Al–Zn–Mg alloy, Scripta Materialia, 56(4), 305(2007)
7	HUANG Lanping,CHEN Kanghua, LI Song, LIU Hongwei, Effect of high-temperature pre-precipitation on microstructure, mechanical property and stress corrosion cracking of Al-Zn-Mg aluminum alloy, The Chinese Journal of Nonferrous Metals, 15(5), 727(2005)
7	(黄兰萍, 陈康华, 李松, 刘红卫, 高温预析出对Al-Zn-Mg铝合金组织、力学性能和应力腐蚀性能的影响, 中国有色金属学报, 15(5), 727(2005))
8	SHI Feng,WANG Yu, YIE Pengfei, LIU Liying, Effect of aging system on properties of A7N01 aluminum profiles for rail body, Aluminum Fabrication, 5(196), 29(2010)
8	(石峰, 王煜, 叶朋飞, 刘丽英, 时效制度对A7N01铝合金车体型材性能的影响, 铝加工, 5(196), 29(2010))
9	XIONG Chuangxian,DENG Yun1ai, WAN Li, ZHANG Xinming, Evolutions of microstructures and textures of 7050 Al alloy plate during solution heat treatment, The Chinese Journal of Nonferrous Metals, 20(3), 427(2010)
9	(熊创贤, 邓运来, 万里, 张新明, 7050铝合金板在固溶过程中微结构与织构的演变, 中国有色金属学报, 20(3), 427(2010))
10	Bunge H. J.,Mathematische methoden der texturanalyse. 1969, Berlin: Akademie-Verlag.
11	LI Zhihui,XIONG Baiqing, ZHANG Yongan, ZHU Baohong, WANG Feng, LIU Hongwei, Ageing precipitation and strengthening behavior of 7B04 aluminum alloy, The Chinese Journal of Nonferrous Metals, 17(2), 248(2007)
11	(李志辉, 熊柏青, 张永安等, 7B04铝合金的时效沉淀析出及强化行为, 中国有色金属学报, 17(2), 248(2007))
12	Hodgson P, P. B. A.,The composition of insoluble intermetallic phase in aluminum alloy 6010, Journal of Materials Science, 16, 1343(1981)
13	Huang Lanping,Chen Kanghua, Li Song, Zheng Qiang1, Xie Shenghui, Effect of high-temperature pre-precipitation on stress corrosion cracking of Al-Zn-Mg aluminum alloy plate, Rare Metal Materials and Engineering, 35(12), 1943(2006)
13	(黄兰萍, 陈康华, 李松, 郑强, 谢盛辉, 高温预析出对Al-Zn-Mg合金板材应力腐蚀断裂的影响, 稀有金属材料与工程, 35(12), 1943(2006))
14	D. Najjar, T. M., T. J. Warner,Influence of critical surface defects and localized competition between anodic dissolution and hydrogen effects during stress corrosion cracking of a 7050 aluminium alloy, Materials and Science and Engingeering A, 238(2), 293(1997)
15	A. K. Mukhopadhyay, Q. B. Y., S. R. Singh,The influence of zirconium on the early stages of aging of a ternary Al-Zn-Mg alloy, Acta Matallurgica et Materialia, 42(9), 3083(1994)
16	T. D. Burleigh,The postulated mechanisms for stress corrosion cracking of aluminum alloys: a review of the literature 1980-1989, corrosion, 47(2), 89(1991)
17	G. S. Peng, K. H. C., H. C. Fang, S. Y. Chen, H. Chao, The effect of recrystallization on corrosion and electrochemical behavior of 7150 Al alloy. Materials and Corrosion, 62(1), 35(2009)
18	S. H. Kim, U. Erb, K. T. Aust,Grain boundary character distribution and intergranular corrosion behavior in high purity aluminum, Scr. Mater, 44, 835(2001)
19	H. C Fang, K. H Chen,X Chen, Effect of Cr, Yb and Zr additions on localized corrosion of Al–Zn–Mg–Cu alloy, Corrosion Science, 51(12), 2872(2009)
20	T. Minoda, H. YOSHIDA,Effect of grain boundary characteristics on intergranular corrosion resistance of 6061 aluminum alloy extrusion, Metal Mater Trans A, 33, 2891(2002)

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