期刊文献+

Al6061/20SiCw板材的超塑成形极限与空洞行为 被引量:1

Forming limits and cavitation behaviors of superplastic Al6061/20SiC_w sheet
下载PDF
导出
摘要 对Al6061/20SiCw板材在单向拉伸和等双向拉伸应力状态下的孔洞行为进行研究。利用长轴与短轴比分别为1:1和2:1的胀形模具,在恒定应力2MPa,温度873K的条件下,研究Al6061/20SiCw板材的成形极限。基于MARCHINIAK-KUCAYNSKI(M-K)模型和塑性损伤模型,提出一种用于预测Al6061/20SiCw板材在双向拉伸应力状态下的极限应变的分析模型。结果表明:在相似的等效应变速率下,等双向拉伸应力产生的孔洞数量稍多于单向拉伸应力产生的孔洞数量;对于无初始几何缺陷的Al6061/20SiCw板材,分析模型能较为准确地预测复合材料在双向拉伸条件下的极限应变。 The cavitation behaviors of Al6061/20SiCw sheet under uniaxial and equibiaxial tension stress states were investigated. The forming limits of Al6061/20SiCw sheet under biaxial tension using dies with aspect ratios of 1:1 and 2:1 at constant applied stress of 2 MPa and at 873 K were also investigated. An analytic model based on the MARCHINIAK- KUCAYNSKI(M-K) and plastic damage models was proposed to predict the limiting strains of Al6061/20SiCw sheet under biaxial tension stress state. The results show that at a similar effective strain rate, the amount of cavities obtained under equibiaxial tension states is slightly greater than that under uniaxial tension states. Under the condition of Al6061/20SiCw sheet without original geometric deficiency, the prediction of the analytic mode is in agreement with the limiting strains under biaxial tension state.
出处 《中国有色金属学报》 EI CAS CSCD 北大核心 2009年第2期235-240,共6页 The Chinese Journal of Nonferrous Metals
关键词 铝基复合材料 超塑性 孔洞 成形性 aluminum-based composite superplasticity cavitation formability
  • 相关文献

参考文献16

  • 1TONG G Q, CHAN K C. Comparative study of a high-strain-rate superplastic Al-4.4Cu-4.5Mg/21SiCw sheet under uniaxial and equibiaxial tension[J]. Mater Sei Eng A, 2003 A325: 79-86.
  • 2TEE K L, LU L, LAI M O. Improvement in mechanical properties of in-situ Al-TiB2 composite by incorporation of carbon[J]. Mater Sci Eng A, 2003, A351: 227-231.
  • 3LI A B, GENG L. Simulation of the large compressive deformation of metal matrix composites with misaligned whiskers[J]. Mater Sci Eng A, 2003, 358: 324-333.
  • 4闫小青,刘莹,扶名福.冷挤压成形中非局部润滑模型的建立及其近似解[J].塑性工程学报,2004,11(5):54-56. 被引量:3
  • 5IMAI T, MAO J F, DONGS L. High strain rate superplasticity of TiC particulate reinforced 2014 aluminum alloy composites[J]. Mater Sci Eng A, 2004, 364:281-286.
  • 6HAN L H, NIU J T, HUH. Study on high strain rate superplasticity of a 6061A1 alloy composite reinforced with 30vo1.% AIN particulate[J]. J Mater Eng Perform, 2004, 13(2): 200-207.
  • 7XUXiaojing WANGWei CAILan.Superplastidty of a SiC particulate-reinforced 6A02A1 matrix composite[J].Rare Metals,2004,23(1):84-87. 被引量:1
  • 8MA A, NISHIDA Y. Superplasticity of free-grained 20vol.%SiC whiskers reinforced 2024 aluminum alloy produced by ECAP with a rotary die[J]. Mater Sci Forum, 2007, 539(7): 2934-2939.
  • 9IWASAKI H, TAKEUCHI M, MORI T, MABUCHI M, HIGASHI K. A comparative study of cavitation characteristics in Si3N4p/Al-Mg-Si composite and 7475 aluminum alloy[J]. Scripta Metall Mater, 1994, 31 (3): 255-260.
  • 10WADA S, MABUCHI M, HIGASHI K, LANGDON T G. A quantitative analysis of cavitation in Al-Cu-Mg metal matrix composites exhibiting high strain rate superplasticity[J]. J MaterRes, 1996, 11(7): 1755-1764.

二级参考文献4

共引文献2

同被引文献2

引证文献1

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