TY - JOUR
T1 - Influence of pressing speed on microstructural development in equal-channel angular pressing
AU - Berbon, Patrick B.
AU - Furukawa, Minoru
AU - Horita, Zenji
AU - Nemoto, Minoru
AU - Langdon, Terence G.
N1 - Funding Information:
This work was supported in part by the Light Metals Educational Foundation of Japan; in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture of Japan; in part by the Japan Society for the Promotion of Science; and in part by the National Science Foundation of the United States under Grant Nos. DMR-9625969 and INT-9602919.
PY - 1999
Y1 - 1999
N2 - The influence of pressing speed in equal-channel angular (ECA) pressing was investigated using samples of pure Al and an Al-1 pct Mg alloy and a range of pressing speeds from approx. 10-2 to approx. 10 mm s-1. The results show that the speed of pressing has no significant influence on the equilibrium grain size, at least over the range used in these experiments. Thus, the equilibrium grain sizes were approx. 1.2 μm for pure Al and approx. 0.5 μm for the Al-1 pct Mg alloy for all pressing conditions. However, it is shown that the nature of the microstructure is dependent on the pressing speed, because recovery occurs more easily at the slower speeds, so that the microstructure is then more equilibrated. There is also indirect evidence for the advent of frictional effects when the cross-sectional dimensions of the samples are at or below approx. 5 mm.
AB - The influence of pressing speed in equal-channel angular (ECA) pressing was investigated using samples of pure Al and an Al-1 pct Mg alloy and a range of pressing speeds from approx. 10-2 to approx. 10 mm s-1. The results show that the speed of pressing has no significant influence on the equilibrium grain size, at least over the range used in these experiments. Thus, the equilibrium grain sizes were approx. 1.2 μm for pure Al and approx. 0.5 μm for the Al-1 pct Mg alloy for all pressing conditions. However, it is shown that the nature of the microstructure is dependent on the pressing speed, because recovery occurs more easily at the slower speeds, so that the microstructure is then more equilibrated. There is also indirect evidence for the advent of frictional effects when the cross-sectional dimensions of the samples are at or below approx. 5 mm.
UR - http://www.scopus.com/inward/record.url?scp=0032592543&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032592543&partnerID=8YFLogxK
U2 - 10.1007/s11661-999-0009-9
DO - 10.1007/s11661-999-0009-9
M3 - Article
AN - SCOPUS:0032592543
VL - 30
SP - 1989
EP - 1997
JO - Quaternary International
JF - Quaternary International
SN - 1040-6182
IS - 8
ER -