[G] Ultrafine-Grained Materials

1:30 PM - 1:45 PM JST(4:30 AM - 4:45 AM UTC)

[120] Grain Refinement of Metallic Pipes by Severe Plastic Deformation through Multi-Pass High-Pressure Sliding (MP-HPS)

*TANG YONGPENG¹, MATSUDA KOKI¹, HORITA Zenji¹, TAKIZAWA YOICHI², YUMOTO MANABU², OTAGIRI YOSHIHARU² (1. 九大、2. 長野鍛工)

Keywords:

High-pressure sliding,Superplasticity,Grain refinement,Al-Mg-Sc alloy

The multi-pass HPS process was applied for grain refinement of a pipe form of an Al-Mg-Sc alloy. The pipe after the HPS processing exhibited superplasticity with total elongations well more than 400%.