TY - JOUR
T1 - Computer-modelled deformation mechanism maps for hot uniaxially pressed Bi-2223 superconductor
AU - James, M. P.
AU - Glowacki, B. A.
AU - Tampieri, A.
AU - Celotti, G.
PY - 1997
Y1 - 1997
N2 - A deformation mechanism map represents the densification behaviour of a green powder body. A map is created by evaluating the rate-equations for five types of densification mechanisms: yield, boundary diffusion, volume diffusion, power-law creep, and Nabarro Herring creep. These rates are summed where appropriate and integrated to give the density at a given pressure, temperature and time; this can then be plotted on a map. Such maps have been created for hot-pressed Bi-2223, using the HIP 6.0 computer software. Four temperature density deformation maps were created at different pressing pressures and for two types of powder: a solid-state reacted powder and a pyrolysed organic precursor powder. The resulting maps are compared and discussed in relation to a set of experimental results.
AB - A deformation mechanism map represents the densification behaviour of a green powder body. A map is created by evaluating the rate-equations for five types of densification mechanisms: yield, boundary diffusion, volume diffusion, power-law creep, and Nabarro Herring creep. These rates are summed where appropriate and integrated to give the density at a given pressure, temperature and time; this can then be plotted on a map. Such maps have been created for hot-pressed Bi-2223, using the HIP 6.0 computer software. Four temperature density deformation maps were created at different pressing pressures and for two types of powder: a solid-state reacted powder and a pyrolysed organic precursor powder. The resulting maps are compared and discussed in relation to a set of experimental results.
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U2 - 10.1023/A:1018585413354
DO - 10.1023/A:1018585413354
M3 - Article
AN - SCOPUS:0031095239
SN - 0022-2461
VL - 32
SP - 1409
EP - 1414
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 6
ER -