Springback-free Isothermal Forming of High-strength Steel Sheets and Aluminum Alloy Sheets under Warm and Hot Forming Conditions

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概要

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• Quasi-isothermal sheet forming experiments of 300 mm square–1 mm thickness sheets are conducted using newly developed forming dies with a built-in heater and a 3000 kN hydraulic press, and the characteristics of springback reduction due to the elevation in forming temperature are clarified. The springback-free forming of high-strength steel sheets is realized in the warm forming temperature range. This result is confirmed by isothermal V-bending tests in a hot compression testing machine, where a marked decrease in springback is observed when the forming temperature of mild, precipitation-hardened, TRIP and dual-phase steels is higher than 750 K, which is approximately the critical temperature for the onset of ferrite recrystallization.

• 社団法人 日本鉄鋼協会の論文
• 2006-09-15

著者

• Yanagimoto Jun

  Environmental Conscious Ultra-fine-grained Steel Consortium Of Jrcm (the Japan Research And Developm

• OYAMADA Keigo

  Institute of Industrial Science, The University of Tokyo

• Oyamada Keigo

  Institute Of Industrial Science The University Of Tokyo

関連論文

• Springback-free Isothermal Forming of High-strength Steel Sheets and Aluminum Alloy Sheets under Warm and Hot Forming Conditions

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