Influence of strain gradients on the grain refinement during industrial scale ECAP
Influence of strain gradients on the grain refinement during industrial scale ECAP
复制标题
工业规模 ECAP 过程中应变梯度对晶粒细化的影响
DOI:
10.1002/mawe.201100839
复制
发表时间:
2011
影响因子:
1.1
通讯作者:
T. Lampke
中科院分区:
文献类型:
--
作者:
P. Frint;M. Hockauf;D. Dietrich;T. Halle;M.F.-X. Wagner;T. Lampke
The microstructure of the aluminium alloy 6060 after industrial scale (cross‐section 50×50 mm2) equal‐channel angular pressing (ECAP) is studied. We focus on processing without additional backpressure in order to allow the formation of a corner gap and the corresponding development of a distinct strain gradient after one pass. Low voltage scanning transmission electron microscopy (STEM) and electron backscatter diffraction analysis (EBSD) are used to determine the average grain size, grain boundary misorientation angles and grain shape aspect ratios. These microstructural parameters are analysed for three characteristic locations from top to bottom within the billet. Our EBSD observations clearly document the occurrence of global strain gradients and microstructural heterogeneity. The STEM analyses expand the information on this heterogeneous deformation for the investigated locations in the sub‐micrometer range. In good agreement with previous studies, our results provide detailed information on how a heterogeneous induced shear strain affects microstructure and mechanical properties when ECAP is performed without backpressure.
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影响因子:
1.1
作者:
Philipp Frint;T. Halle;M. Wagner;M. Hockauf;T. Lampke
通讯作者:
T. Lampke
DOI:
10.4028/www.scientific.net/msf.584-586.988
发表时间:
2008-06
期刊:
Materials Science Forum
影响因子:
--
作者:
B. Wielage;D. Nickel;T. Lampke;Gert Alisch;H. Podlesak;S. Darwich;M. Hockauf
通讯作者:
B. Wielage;D. Nickel;T. Lampke;Gert Alisch;H. Podlesak;S. Darwich;M. Hockauf
影响因子:
4.5
作者:
Hockauf, Kristin;Meyer, Lothar W.;Halle, Thorsten
通讯作者:
Halle, Thorsten
DOI:
10.3139/147.110111
发表时间:
2011
期刊:
Practical Metallography
影响因子:
--
作者:
D. Dietrich;H. Berek;A. Schulze;Ingolf Scharf;T. Lampke
通讯作者:
T. Lampke
影响因子:
1.1
作者:
K. Hockauf;L. W. Meyer;T. Halle;M. Hockauf
通讯作者:
M. Hockauf