全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
材料工程  2012 

Al-Cu-Mg-Ag耐热铝合金断续时效处理研究

, PP. 47-51

Keywords: Al-Cu-Mg-Ag合金,耐热铝合金,断续时效,微观组织

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用维氏硬度测试、拉伸性能测试和透射电子显微分析技术,研究了断续时效处理对Al-Cu-Mg-Ag耐热铝合金组织与性能的影响。结果表明,较低的二次时效温度能够促进θ'相的析出,抑制Ω相的析出,降低合金强度,提高合金的伸长率;而较高的二次时效温度则会促进Ω相的析出,抑制θ'相的析出,细化Ω相的尺寸,并且能够改善强化相在晶界的分布,从而提高合金的强度和伸长率。合金适宜的断续时效制度为185℃/2h+150℃/6h。

References

[1]  SUKUMARAN K, RAVIKUMAR K K, PILLAI S G K, et al. Studies on squeeze casting of Al 2124 alloy and 2124-10% SiCp metal matrix composite[J]. Materials Science and Engineering: A, 2008, 490(1-2): 235-241.
[2]  NAGA R P, SRINIVASA R K, REDDY G M, et al. Microstructure and high temperature stability of age hardenable AA2219 aluminium alloy modified by Sc, Mg and Zr additions[J]. Materials Science and Engineering: A, 2007, 464(1-2): 192-201.
[3]  WANG J, YI D, SU X, et al. Influence of deformation ageing treatment on microstructure and properties of aluminum alloy 2618[J]. Materials Characterization, 2008, 59(7): 965-968.
[4]  YU K, LI W, LI S, et al. Mechanical properties and microstructure of aluminum alloy 2618 with Al3(Sc, Zr) phases[J]. Materials Science and Engineering A, 2004, 368(1-2): 88-93.
[5]  CHANG C H, LEE S L, LIN J C, et al. Effect of Ag content and heat treatment on the stress corrosion cracking of Al-4.6Cu-0.3Mg alloy[J]. Materials Chemistry and Physics, 2005, 91(2-3): 454-462.
[6]  XIAO D H, WANG J N, DING D Y, et al. Effect of Cu content on the mechanical properties of an Al-Cu-Mg-Ag alloy[J]. Journal of Alloys and Compounds, 2002, 343(1-2): 77-81.
[7]  肖代红, 宋玟, 陈康华, 等. 热处理对含Ag耐热铝合金组织与性能影响[J]. 材料热处理学报, 2008, 29(1): 75-79.
[8]  LUMLEY R N, POLMEAR I J. The effect of long term creep exposure on the microstructure and properties of an underaged Al-Cu-Mg-Ag alloy[J]. Scripta Materialia, 2004, 50(9): 1227-1231.
[9]  LUMLEY R N, POLMEAR I J, MORTON A J. Heat treatment of age-hardenable aluminum alloys. United States: US7025839B2, 2006.
[10]  MACCHI C E, SOMOZA A, DEPASQUIER A, et al. Secondary precipitation in Al-Zn-Mg-(Ag) alloys[J]. Acta Materialia, 2003, 51(17): 5151-5158.
[11]  BUHA J, LUMLEY R N, CROSKY A G. Secondary ageing in an aluminium alloy 7050[J]. Materials Science and Engineering A, 2008, 492(1-2): 1-10.
[12]  李海, 郑子樵, 王芝秀. 7055 铝合金二次时效特征研究-(I)力学性能[J]. 稀有金属材料与工程, 2005, 34(7): 1029-1032.
[13]  周古为, 郑子樵, 李海. 基于人工神经网络的 7055 铝合金二次时效性能预测[J]. 中国有色金属学报, 2006, 16(9): 1583-1588.
[14]  张坤, 戴圣龙, 黄敏, 等. 高纯Al-Cu-Mg-Ag合金的断续时效工艺研究[J]. 航空材料学报, 2007, 27(4): 1-5.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133