Paper Title:
Effects of Strain-Graded Plastic Deformation on Mechanical Properties of Metals
  Abstract

In a flow forming process of automobile wheels of Al-based alloys, plastic deformation of the rim part is performed by rollers from the periphery side, while the inner periphery is fixed on a steel mandrel and is slightly deformed. Therefore, the rim part has a strain-graded microstructure in the thickness direction. In this study, the effects of the strain-graded plastic deformation on mechanical properties of an Al-Si cast alloy have been investigated. The strain-graded plastic deformation in this study was done by hot rolling of an Al alloy plate together with a steel plate. The two plates were joined at one end in the longitudinal direction and were rolled from the joined edge at 330 oC using a roller with a roll diameter of 200 mm and a rotation speed of 66 per minute. The chemical composition of the alloy was Al-7mass%Si-0.3mass%Mg-0.3mass%Fe. The rolled Al alloy plate had a strain-graded microstructure in the thickness direction; the strain was the highest at the roller side surface and the lowest at the steel plate side surface. The rolling also brought about a Si particle size graded microstructure. The eutectic Si rods were broken by the rolling deformation and the Si particle size was the smallest at the roller side surface and the largest at the steel plate side surface. On the other hand, a normal rolling deformation of the Al alloy plate without the steel plate was also performed for comparison. The rolled sample having the strain-graded and Si particle size graded microstructure exhibited much more excellent bending strength and ductility compared with the normally rolled sample.

  Info
Periodical
Edited by
Pietro VINCENZINI, Ralf RIEDEL, Alexander G. MERZHANOV and Chang-Chun GE
Pages
348-351
DOI
10.4028/www.scientific.net/AST.63.348
Citation
K. Matsuura, M. Ohno, "Effects of Strain-Graded Plastic Deformation on Mechanical Properties of Metals", Advances in Science and Technology, Vol. 63, pp. 348-351, 2010
Online since
October 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Xiao Ping Luo, Lan Ting Xia, Ming Gang Zhang
Abstract:The effect of Cd and Sb addition on the microstructural and mechanical properties of as-cast AZ31 alloys was investigated and compared. The...
197
Authors: Cui Fang Duan, Wei Li, Ji Liang Zhang
Chapter 4: Material Engineering and its Application Technology
Abstract:This article studies aluminum alloy plate through 16 to 3mm thick with a hole under room temperature fracture test. The experimental results...
315
Authors: Andrzej Stefanik, Piotr Szota, Sebastian Mróz, Teresa Bajor, Sonia Boczkal
Chapter 10: Rolling
Abstract:This paper presents the research results of the microstructure changes of the round rods of AZ31 magnesium alloy in the hot rolling...
864