Details

Autor(en) / Beteiligte

• Li, Xiao-Pei
• Kure-Chu, Song-Zhu
• Ogasawara, Toru
• Yashiro, Hitoshi
• Wang, Hai-Bo
• Xu, Zi-Zhen
• Li, Xiao-Hui
• Song, Guo-Lin
• Tang, Guo-Yi

Titel

Fabrication of a Gradient Nano-/Micro-structured Surface Layer on an Al–Si Casting Alloy by Means of Ultrasonic–Electropulsing Coupling Rolling Process

Ist Teil von

• Acta metallurgica sinica : English letters, 2018-12, Vol.31 (12), p.1258-1264

Ort / Verlag

Beijing: The Chinese Society for Metals

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• By using a novel surface modification technique named ultrasonic–electropulsing coupling rolling (UECR) process on an Al–Si casting alloy rod, the surface of material was smoothened significantly. Meanwhile, a strengthened layer with a gradient change in hardness was obtained in the outer surface, corresponding to a homogeneous gradient nano-/micro-structure. The thickness of nanometer-thick laminated structures was at least 40 μm, which was much thicker than conventional ultrasonic rolling process. During UECR, the formation of the well-defined nanocrystalline structure was attributed to the high strain rate and simultaneous annealing process realized by ultrasonic impact and electropulsing treatment.