欢迎登录材料期刊网

材料期刊网

高级检索

研究了AA6156铝合金在不同时效状态下的拉伸性能和平面应力断裂韧性.结果表明:AA6156合金薄板在自然时效态下断裂韧性最好,但强度偏低;在190℃单级峰时效和175℃/6 h+190℃/13 h双级过时效态下强度较好,但断裂韧性偏低;而在175℃/2 h+200℃/0.5 h双级时效态下达到较理想的强韧性匹配.由透射电镜和扫描电镜观察其微观组织及断口形貌得出:双级时效时,第一级预时效处理能增大GP区的析出数量,从而在后续第二级时效时极大地促进β”相更密集、更均匀地析出.时效制度对AA6156合金断裂韧性的影响主要取决于晶内析出相β”,而受晶界微观组织结构的影响较小.

参考文献

[1] Asserinlebert A;Besson J;Gourgues A .[J].Materials science & engineering A Structural materials:properties microstructure and processing,2005,395(1-2):186.
[2] Williams J C;Starke E A .[J].Acta Materialia,2003,51(19):5775.
[3] Morgeneyer T F;Starink M J;Sinclair I .[J].Materials Science Forum,2006,519-521:1023.
[4] Delmas F;Casanove M;Lours P et al.[J].Materials science & engineering A Structural materials:properties microstructure and processing,2004,373(1-2):80.
[5] Machold W;Staron P;Bayraktar F S et al.[J].Materials Science Forum,2008,571-572:375.
[6] 钟申,郑子樵,廖忠全,蔡彪.时效制度对2A97铝锂合金强韧性的影响[J].中国有色金属学报,2011(03):546-553.
[7] Buha J;Lumley R;Crosky A et al.[J].Acta Materialia,2007,55(09):3015.
[8] 袁志山,陆政,谢优华,吴秀亮,戴圣龙,刘常升.2A97铝锂合金双级时效研究[J].稀有金属材料与工程,2011(03):443-447.
[9] 余玲娟;郑子樵;钟 警 et al.[J].机械工程材料,2011,35(05):19.
[10] Liu G;Zhang G;Wang R et al.[J].Acta Materialia,2007,55(01):273.
[11] Murayama M;Hono K;Miao W et al.[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2001,32(02):239.
[12] Wang X;Poole W J;Esmaeili S et al.[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2003,34A(12):2913.
[13] Esmaeili S;Wang X;Lloyd D et al.[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2003,34(03):751.
[14] Morgeneyer T F;Starink M J;Wang S C et al.[J].Acta Materialia,2008,56(12):2872.
[15] Bron F;Besson J .[J].Engineering Fracture Mechanics,2006,73(11):1531.
[16] Haynes M J;Gangloff R P .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1998,29(06):1599.
[17] Chakrabarti D J;Laughlin D E .[J].Progress in Materials Science,2004,49(3-4):389.
[18] Csontos AA;Starke EA .The effect of inhomogeneous plastic deformation on the ductility and fracture behavior of age hardenable aluminum alloys[J].International Journal of Plasticity,2005(6):1097-1118.
[19] Totten G E;Mackenzie D S.Handbook of Aluminum,Volume 1:Physical Metallurgy and Processes[M].New York,USA:Marcel Dekker,Inc,2003:133.
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%