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圆形挤压件等通道多弯角挤压变形机理研究 被引量：1

Studies on deformation mechanism of equal channel multi-angular pressing process for round-workpieces
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摘要 等通道弯角挤压工艺是制备块体超细晶粒材料的重要方法之一.由于等通道弯角单道次挤压获得的挤压件变形分布不均匀,因此,在等通道弯角挤压细化晶粒工艺中必须寻求较好的工艺路线,以避免挤压件变形的不均匀性.通过设计复杂模具型腔模拟了多弯角挤压变形过程,获得了挤压工艺载荷-行程曲线,得出了等通道弯角挤压在不同工艺路线下对应挤压件的变形分布均匀程度,为实验研究圆形挤压件等通道弯角挤压工艺提供可靠的工艺参数和较好的工艺路线.
作者 赵国群 徐淑波 栾贻国 管延锦
机构地区 山东大学
出处 《塑性工程学报》 CAS CSCD 北大核心 2005年第z1期52-56,共5页 Journal of Plasticity Engineering
基金 山东省优秀中青年科学家科研奖励基金资助项目(02BS063).
关键词 等通道弯角挤压 有限元分析 多弯角通道 工艺路线 超细晶粒
分类号 TG376 [金属学及工艺—金属压力加工] TP39 [自动化与计算机技术—计算机应用技术]
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参考文献8

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同被引文献11

  • 1Y M Wang, M W Chen, F H Zhou, et al. High tensile ductility in a nanostrucrured metal[J~. Nature, 2002. 419(6910) : 912-915.
  • 2E OHall. The deformation and ageing of mild steel.- IlI Discussion of results [J~. Proceedings of the Physical Society, B, 1951.64(9) ~ 747-753.
  • 3V M Segal. Materials processing by simple shear[J~. Materials Science and Engineering A, 1995. 197 (2).. 157-164.
  • 4P K Jayakumar, K B alasubramanian, G Rabindranath Tagore. Recrystallisation and bonding behaviour of ultra fine grained copper and Cu-Cr-Zr alloy using ECAP~J~. Materials Science and Engineering A, 2012. 538(3) ;7-13.
  • 5C F Zhu, F P Du, Q Y Jiao, et al. Microstructure and strength of pure Cu with large grains processed by equal channel angular pressing[J~. Materials and Design,2013.52(24):23 29.
  • 6Y L Wang, R Lapovok, J T Wang, et al. Thermal be- havior of copper processed by ECAP with and without back pressure[J]. Materials Science and Engineering A, 2015. 628 : 21-29.
  • 7O F Higuera-Cobos, J A Berrios-Ortiz, J M Cabrera. Texture and fatigue behavior of ultrafine grained cop- per produced by ECAP[J]. Materials Science and Engi- neering A, 2014. 609 (27) : 273-282.
  • 8Y Iwahashi,Z Horita, M Nemoto. Process of grain re- finement in equal channel angular pressing[J]. Aeta Materia, 1998. 46(9) : 3317-3331.
  • 9R Z Valley, T G Langdon. Principles of equal-channel angular pressing as a processing tool for grain refine- ment[J]. Progress in Materials Science, 2006. 51 (7): 881-981.
  • 10A Yamashita, D Yamaguchi, Z Horita, et al. Influence of pressing temperature on microstructural develop- ment in equal channel angular pressing[J]. Material Science and Engineering, 2000. 287 (1) : 100-106.

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塑性工程学报
2005年 第z1期

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