欢迎登录材料期刊网

材料期刊网

高级检索

采用等通道转角挤压(ECAP)技术改良了传统挤压模具分流孔;通过螺旋槽焊合模腔,挤出了壁厚2 mm的管材.研究了镁合金的组织变化及材料的性能.结果表明:挤压态合金组织均匀,品粒细小(平均晶粒尺寸约为12.5 μm).等通道转角挤压的细化晶粒过程、动态再结晶以及退火再结晶使合金具有良好的组织结构和力学性能.挤压态试样断口呈现为脆性解理断裂方式,退火态试样断口则表现为脆性和韧性混合断裂机制.

参考文献

[1] Cai WD.;Lavernia EJ.;Smugeresky J. .Low-pressure spray forming of 2024 aluminum alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1998(1/2):60-71.
[2] Aghion E.;Bronfin B. .Magnesium Alloys Development towards the 21~(st) Century[J].Materials Science Forum,2000(0):19-28.
[3] M. Mabuchi;H. Iwasaki;K. Yanase;K. Higashi .LOW TEMPERATURE SUPERPLASTICITY IN AN AZ91 MAGNESIUM ALLOY PROCESSED BY ECAE[J].Scripta materialia,1997(6):681-686.
[4] Valiev R Z;Islamgalie R K;Alexandrov I V .Bulk nano-structured materials from severe plastic deformation[J].Materials Science,2000,45:103-189.
[5] Mehta D S;Masood S H;Song W Q .Investigation of wear properties of magnesium and aluminum alloys for sutomotive applications[J].Journal of Materials Processing Technology,2004,155:1526-1531.
[6] E. Aghion;B. Bronfin;D. Eliezer .The role of the magnesium industry in protecting the environment[J].Journal of Materials Processing Technology,2001(3):381-385.
[7] 汪凌云,黄光胜,范永革,黄光杰.变形AZ31镁合金的晶粒细化[J].中国有色金属学报,2003(03):594-598.
[8] 张凯锋,尹德良,韩文波.热轧AZ31镁合金温变形中的微观组织演变[J].航空学报,2005(04):505-509.
[9] J.C. Tan;M.J. Tan .Dynamic continuous recrystallization characteristics in two stage deformation of Mg-3Al-1Zn alloy sheet[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):124-132.
[10] Fatemi-Varzaneh S M;Zarei-Hanzaki A;Beladi H .Dynamic recrytallization in AZ31 magnesium.alloy[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2007,456(1-2):52-57.
[11] Swiostek J;Yi S B .Microstructure and texture development during hydrostatic extrusion of magnesium alloy AZ31[J].Scripta Materialia,2005,53(02):259-264.
[12] 黄正华,郭学锋,张忠明.快速凝固AZ91D镁合金组织的研究[J].材料热处理学报,2005(01):32-35.
[13] 何祝斌,王小松,苑世剑,许爱军.AZ31B镁合金挤压管材的内高压成形性能[J].金属学报,2007(05):534-538.
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%