@inproceedings{f6aa06f4b1f1492a93dbcfa78e33fa43,
title = "Bulk Al materials from back pressure equal channel angular consolidation of mechanically milled particles",
abstract = "Mechanically milled pure aluminium powders were fabricated into bulk materials using back pressure equal channel angular consolidation (BP-ECAC) for four or eight passes at 373K. The bulk materials consolidated from 0 h and 4 h mechanically milled powders were characterised by Vickers hardness tests and density measurements. Thermal stability of the consolidated bulk materials was evaluated by isothermal heat treatments at 673K. The as-consolidated bulk material from the 0 h milled (i.e. unmilled) powder showed nearly full density. However, full density was not obtained with the 4 h milled powder even after eight passes. The HV values for the as-consolidated materials fabricated from the 0 h and 4 h milled powders after four passes and from the 4 h milled powder after eight passes were 57, 121 and 136, respectively. Softening was observed in the bulk material consolidated from the 0 h milled powder during the isothermal heat treatment. However, the hardness of the bulk materials consolidated from the 4 h milled powders after four and eight passes increased to maximum values of 137 and 141 after heat treatment for 28 h and 8 h at 673K, respectively. The maximum hardness was maintained for up to 100 h at 673K in both materials. The hardening and thermal stability in the bulk materials from the milled powders are attributable to dispersion strengthening of Al4C3 particles formed by solid-state reaction during the isothermal heat treatment.",
keywords = "Composite materials, ECAP, Mechanical milling, Powder consolidation, Pure aluminium, Severe plastic deformation",
author = "Masahiro Kubota and Xiaolin Wu and Wei Xu and Kenong Xia",
year = "2008",
language = "English",
isbn = "9780878493753",
volume = "584-586 PART 1",
series = "Materials Science Forum",
publisher = "Trans Tech Publications",
pages = "428--433",
editor = "Yuri Estrin and Maier, {Hans J{\"u}rgen}",
booktitle = "Materials Science Forum - Nanomaterials by Severe Plastic Deformation 4 - 4th International Conference on Nanomaterials by Severe Plastic Deformation",
address = "Switzerland",
note = "4th International Conference on Nanomaterials by Severe Plastic Deformation ; Conference date: 18-08-2008 Through 22-08-2008",
}