Grain Refinement and Hardening Induced by Heavy Deformation using Low Energy High Current Pulsed Electron Beam Surface Treatment
The low energy high current pulse electron beam (LEHCPEB) irradiation induces ultra fast dynamic temperature fields in the surface of the material to which is associated dynamic stress fields that causes intense deformation at the material surface and subsurface. Improved surface properties (hardness, corrosion resistance) can be obtained using the LEHCPEB treatment. Under the Melting mode, the top surface (few urn) which is melted and rapidly solidified (107 K/s), can solidify has nano-domains formed from the highly under-cooled melt. The thermal stress wave that propagates in the sub-surface imposes strain hardening and grain size refinement. This induces a sub-surface hardening that can extent over about 100 urn. The use of the Heating mode is less conventional. This mode can promote grain size refinement, hardening as well as texture modification without modification of the sample geometry.
T.Grosdidier Y.Samih N.Allain-Bonasso B.Bolle Z.X.Zou Y.Quin S.Z.Hao C.Dong
Laboratoire dEtude des Textures et Applications aux Materiaux -CNRS 3143 -Universite Paul Verlaine Laboratoire dEtude des Textures et Applications aux Materiaux -CNRS 3143 -Universite Paul Verlaine School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,P.R.China Ecole Nationale dlngenieurs de Metz,57000 Metz
国际会议
5th International Conference on Nanomaterials by Severe Plastic Deformation(第五届剧烈塑性变形纳米材料国际会议)
南京
英文
499-504
2011-03-01（万方平台首次上网日期，不代表论文的发表时间）