期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

Micromechanical model for competition between intergranular and intragranular fracture in 7 X X X aluminum alloys 被引量：1

Micromechanical model for competition between intergranular and intragranular fracture in 7 X X X aluminum alloys
下载PDF
导出
摘要 The 7XXX aluminum alloys having a microstructure with precipitate free zones (PFZ) nearby the grain boundary, have received a great deal of attention due to their high strength, light mass, and yet poor fracture toughness. Experimental investigation into the effect of microstructure on the ductility was well established and comprehensive in the literature. A micromechanical model using a unit cell including some voids and relevant microstructural features was created. The competition between intergranular and intragranular fracture was investigated by comparing the void growth velocity between PFZ and matrix. The effects of void aspect ratio, relative PFZ volume, orientation of PFZ on the ductility of 7XXX aluminum alloys were analyzed. The results show that the model can explain the effect of microstructure on the competition between intergranular and intragranular fracture. The 7 ××× aluminum alloys having a microstructure with precipitate free zones （PFZ） nearby the grain boundary, have received a great deal of attention due to their high strength, light mass, and yet poor fracture toughness. Experimental investigation into the effect of microstructure on the ductility was well established and comprehensive in the literature. A micromechanical model using a unit cell including some voids and relevant microstructural features was created. The competition between intergranular and intragranular fracture was investigated by comparing the void growth velocity between PFZ and matrix. The effects of void aspect ratio, relative PFZ volume, orientation of PFZ on the ductility of 7××× aluminum alloys were analyzed. The results show that the model can explain the effect of microstructure on the competition between intergranular and intragranular fracture.
作者 张新明 刘文辉 唐建国 刘胜胆
机构地区 School of Materials Science and Engineering
出处 《中国有色金属学会会刊：英文版》 CSCD 2006年第A03期1219-1223,共5页 Transactions of Nonferrous Metals Society of China
基金 Project(2005CB623706) supported by the National Basic Research Program of China
关键词 铝合金 微观结构 延性 微化学 强度 aluminum alloys micromechanical model unit cell intergranular fracture intragranular fracture
分类号 TG113 [金属学及工艺—物理冶金]
  • 相关文献

参考文献2

二级参考文献42

  • 1[2]Brown L M,Embury J D.Initiation and growth of voids at second phase particles [R].Institute of Metals (London),Monograph and Report Series,1973,1: 164-169.
  • 2[3]Rozovsky E,Han W C Jr,Aritzur B.Behavior of particles during plastic deformation of metals [J].Metallurgical Transaction,1973,4: 927-930.
  • 3[4]Argon A S,Im J,Safoglu R.Cavity formation from inclusions in ductile fracture [J].Metallurgical Transaction,1975,6A: 825-837.
  • 4[5]Thompson A W,Weihrauch P F.Ductile fracture: nucleation at inclusions [J].Scripta Metallurgica,1976,10: 205-210.
  • 5[6]Goods S H,Brown L M.Nucleation of cavities by plastic deformation [J].Acta Metallurgica,1979,27: 1-15.
  • 6[7]Sun J,Deng Z J,Li Z H,et al.Constraint intensity in crack tip field and elastic-plastic fracture criterion [J].Engineering Fracture Mechanics,1989,34: 637-643.
  • 7[8]Sun J.Effect of stress triaxiality on micro-mechanism of void coalescence and micro-fracture ductility of materials [J].Engineering Fracture Mechanics,1991,39: 799-805.
  • 8[9]Sun J,Deng Z J,Tu M J.Effect of stress triaxiality levels in crack tip regions on the characteristics of void growth and fracture criteria [J].Engineering Fracture Mechanics,1991,39: 1051-1060.
  • 9[10]Sun J.Stress triaxiality constraint and crack tip parameters [J].Engineering Fracture Mechanics,1993,44: 789-806.
  • 10[11]Tszeng T C.Model of void nucleation from ellipsoidal inclusions in ductile fracture [J].Scripta Metallurgica Materialia,1993,28: 1065-1070.

共引文献35

同被引文献15

  • 1WEI Ying-hui,HOU Li-feng,YANG Li-jing,XU Bing-she,KOZUKA M,ICHINOSE H.Microstructures and properties of die casting components with various thicknesses made of AZ91D alloy. Journal of Materials Processing Technology . 2009
  • 2WEILER J P,WOOD J T.Modeling fracture properties in a die-cast AM60B magnesium alloy II—The effects of the size and location of porosity determined using finite element simulations. Materials Science Engineering A Structural Materials Properties Microstructure and Processing . 2009
  • 3SRIVATSAN T S,,VASUDEVAN S,PETRAROLI M.The tensile deformation and fracture behavior of a magnesium alloy. Journal of Alloys and Compounds . 2008
  • 4WANG Yi,YUE Zhu-feng,STEIN M P.Experimental and finite element study of void growth in nickel-base single crystal superalloys. Rare Metal Materials and Enginerring . 2006
  • 5GURSON A L.Continuum theory of ductile rupture by void nucleation and growth.Part I—yield criteria and flow rules for porous ductile media. Energy Research and Development Administration . 1975
  • 6Zhi-guo YANG and Shi-guo LONG.Damage analysis for particle reinforced metal matrix composite by ultrasonic method. Transactions of Nonferrous Metals Society of China . 2006
  • 7Tvergaard V,Needleman A.Analysis of the cup-cone fracture in a round tensile bar. Acta Metallurgica . 1984
  • 8Valanis KC.A theory of viscoplasticity without a yield surface. Part 2. Application to mechanical behavior of metals. Archives of Mechanics . 1971
  • 9FAN J,HUANG J,ZENG X.Microscopically based constitutive relations for damage mechanics and creep-plasticity interaction. Nuclear Engineer The . 1989
  • 10SIRUGUET K,LEBLOND J B.Effect of void locking by inclusions upon the plastic behavior of porous ductile solids—Ⅰ:Theoretical modeling and numerical study of void growth. International Journal of Plasticity . 2004

引证文献1

中国有色金属学会会刊：英文版
2006年 第A03期

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部