Generation of a fine grain layer in the vicinity of frictional interfaces in direct extrusion of AZ31 alloy

Sergei Alexandrov, Yeau-Ren Jeng, Yeong Maw Hwang

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

The present paper deals with the generation of hard layers in the vicinity of frictional interfaces in metal forming processes. The primary objective of the paper is to introduce a general approach to relate the strain rate intensity factor and parameters that characterize the microstructure and thickness of such layers. This approach is used in conjunction with axisymmetric direct extrusion of an AZ31 alloy. The thickness of the hard layer is determined experimentally. Also determined is the distribution of average grain size and hardness near the friction surface. The strain rate intensity factor is found using an available semi-analytical solution.

Original languageEnglish
Article number051003
JournalJournal of Manufacturing Science and Engineering, Transactions of the ASME
Volume137
Issue number5
DOIs
Publication statusPublished - 2015 Oct 1

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering
  • Mechanical Engineering
  • Computer Science Applications
  • Control and Systems Engineering

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