欢迎登录材料期刊网

材料期刊网

高级检索

对6111铝合金板材T4P态(预时效后室温放置)和烤漆态(185℃×20 min)沿不同方向的力学性能和织构差异进行研究,结果表明:合金两个状态沿不同方向的力学性能存在明显差异,屈服强度沿轧向最高,分别为171MPa和261MPa,烘烤增量达90 MPa,而伸长率却在与轧向呈45°方向最高;T4P态r和n值均沿轧向最高,而与轧向呈45°方向最低;合金T4P态已完全再结晶,表层晶粒尺寸小于中间层,纵截面再结晶晶粒长宽比高于横截面的;合金板材滑厚度方向存在明显的织构梯度,表层以{001} 〈100〉 Cube织构和β取向线上的{114} 〈131〉织构为主,而中间层除{001} 〈100〉 Cube织构外,还存在旋转立方织构{001} 〈310〉;据此建立了6111铝合金板材不同状态力学性能和织构之间的定量关系.

参考文献

[1] W. C. Liu;J. G. Morris .Effect of pre-treatment on recrystallization and recrystallization textures of cold rolled CC AA 5182 aluminum alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):253-262.
[2] LIU Hong,赵刚,LIU Chun-ming,左良.自然时效及预时效6000系合金人工时效析出行为[J].材料热处理学报,2008(04):74-78.
[3] Liu WC.;Morris JG. .Comparison of the texture evolution in cold rolled DC and SC AA 5182 aluminum alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):183-193.
[4] 金曼,邵光杰.添加元素Cu对Al-Mg-Si合金析出相行为的影响[J].材料热处理学报,2009(03):67-70.
[5] S. Pogatscher;H. Antrekowitsch;H. Leitner .Mechanisms controlling the artificial aging of Al-Mg-Si Alloys[J].Acta materialia,2011(9):3352-3363.
[6] S. Esmaeili;D.J. Lloyd;H. Jin .A thermomechanical process for grain refinement in precipitation hardening AA6xxx aluminum alloys[J].Materials Letters,2011(6):1028-1030.
[7] 纪艳丽,郭富安,潘琰峰,钟皓.预时效制度对Al-Mg-Si-Cu合金组织与性能的影响[J].材料热处理学报,2010(02):85-89.
[8] Davidkov, A.;Petrov, R.H.;De Smet, P.;Schepers, B.;Kestens, L.A.I. .Microstructure controlled bending response in AA6016 Al alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2011(22):7068-7076.
[9] 李海,史志欣,王芝秀,王秀丽,郑子樵.Mn和Cr对Al-Mg-Si-Cu合金组织及性能的影响[J].材料热处理学报,2011(10):100-105.
[10] Engler O.;Hirsch J. .Texture control by thermomechanical processing of AA6xxx Al-Mg-Si sheet alloys for automotive applications - a review[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(1/2):249-262.
[11] Burger G B;Gupta A K;Jeffrey P W et al.Microstructural control of aluminum sheet used in automotive applications[J].Materials Characterization,1995,35(01):23-39.
[12] Miller W S;Zhuang L;Bottema J et al.Recent development in aluminium alloys for the automotive industry[J].Materials Science and Engineering A,2000,280(01):37-49.
[13] R. Smerd;S. Winkler;C. Salisbury;M. Worswick;D. Lloyd;M. Finn .High strain rate tensile testing of automotive aluminum alloy sheet[J].International journal of impact engineering,2005(1/4):541-560.
[14] Hirth S M;Marshall G J;Court S A et al.Effects of Si on the aging behaviour and formability of aluminium alloys based on AA6016[J].Materials Science and Engineering A,2001,319-321:452-456.
[15] Zhongqi Yu;Zhongqin Lin;Yixi Zhao .Evaluation of fracture limit in automotive aluminium alloy sheet forming[J].Materials & Design,2007(1):203-207.
[16] Sidor, J;Miroux, A;Petrov, R;Kestens, L .Controlling the plastic anisotropy in asymmetrically rolled aluminium sheets[J].Philosophical magazine,2008(30/32):3779-3792.
[17] 于忠奇,赵亦希,林忠钦.汽车用铝合金板拉深性能评估参数[J].中国有色金属学报,2004(10):1689-1693.
[18] 田妮,赵刚,左良,刘春明.汽车车身用Al-Mg-Si-Cu合金薄板应变强化行为的研究[J].金属学报,2010(05):613-617.
[19] Cho KK;Lee CW;Kwun SI;Shin MC;Chung YH .Effects of grain shape and texture on the yield strength anisotropy of Al-Li alloy sheet[J].Scripta materialia,1999(6):651-657.
[20] Ardakani M G;Humphreys F J .The annealing behaviour of deformed particle-containing aluminium single crystals[J].Acta Metallurgica Et Materialia,1994,42(03):763-780.
[21] Y. S. Liu;S. B. Kang;H. S. Ko .Texture and plastic anisotropy of Al-Mg-0.3Cu-1.0Zn alloys[J].Scripta materialia,1997(4):411-417.
[22] Zhou Y;Neale K W .Predictions of forming limit diagrams using a rate-sensitive crystal plasticity model[J].International Journal of Mechanical Sciences,1995,37(01):1-20.
[23] Ramage R M;Bryant J D;Beaudoin A J.Textural evolution and spatial distribution in AA6111-T4 automotive body sheet[A].Warrendale,PA USA,1998:19-26.
[24] Wu P D;Neale K W;Van der Giessen E et al.Crystal plasticity forming limit diagram analysis of rolled aluminum sheets[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1998,29(02):527-535.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%