G041021 Mechanical Properties of Aluminum Foam with Nonporous Surface Layer Formed by Friction Stir Incremental Forming

2013 ◽  
Vol 2013 (0) ◽  
pp. _G041021-1-_G041021-3
Author(s):  
Ryo MATSUMOTO ◽  
Hiroyuki TSURUOKA ◽  
Masaaki OTSU ◽  
Hiroshi UTSUNOMIYA
Keyword(s):  
Mechanical Properties ◽  
Surface Layer ◽  
Aluminum Foam ◽  
Incremental Forming ◽  
Friction Stir

Formation of skin surface layer on aluminum foam by friction stir powder incremental forming

2018 ◽  
Vol 99 (5-8) ◽  
pp. 1853-1861 ◽  
Author(s):  
Ryo Matsumoto ◽  
Seishu Mori ◽  
Masaaki Otsu ◽  
Hiroshi Utsunomiya
Keyword(s):  
Surface Layer ◽  
Aluminum Foam ◽  
Incremental Forming ◽  
Skin Surface ◽  
Friction Stir

The Microstructure and Mechanical Properties of Al/Al2O3 Surface Composite Layer Produced by FSP Green Technique

2015 ◽  
Vol 819 ◽  
pp. 91-96 ◽  
Author(s):  
Kahtan S. Mohammed ◽  
Hasan I. Dawood ◽  
M. Darus Daud
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Surface Layer ◽  
Alumina Particle ◽  
Composite Layer ◽  
Traverse Speed ◽  
Alumina Powder ◽  
Strengthening Effect ◽  
Composite Surface ◽  
Friction Stir

In this study, alumina powder of two particle sizes, 1.0 and 3.0 μm were dispersed into the surface layer of pure commercial aluminum sheets by Friction Stir Processing technique (FSP) to produce a composite surface layer of Al/Al2O3. The processing parameters such as traverse speed and applied load were kept constant throughout the whole process at 45 mm/min and 10 kN respectively. Samples were subjected to various numbers of FSP passes from 1 to 3. The effect of tool rotation speed, alumina particle size and the number of the FSP passes on material flow were investigated. Mechanical properties evaluation of the surface layer revealed that hardness and strength are a result of the interactions of FSP passes and tool rotational speed. The increments in hardness of the surface layer showed big variation between samples of small alumina particle size and that of larger alumina particle size. Finer particles gave better hardness and strengthening effect than the coarse particles did. Microstructural observations were carried out using optical and scanning electron microscopy (SEM) on samples’ cross sections perpendicular to the tool traverse direction.

scholarly journals On the Elastoplastic Behavior of Friction Stir Welded Tailored Blanks for Single Point Incremental Forming

2021 ◽  
Author(s):  
Fausto Tucci ◽  
António Andrade-Campos ◽  
Sandrine Thuillier ◽  
Pierpaolo Carlone
Keyword(s):  
Mechanical Properties ◽  
Model Updating ◽  
Incremental Forming ◽  
Single Point ◽  
Welding Process ◽  
Local Variation ◽  
Single Point Incremental Forming ◽  
Sheet Metals ◽  
Friction Stir ◽  
Tailored Blanks

The current market requirements are increasingly pushing the industry towards the manufacturing of highly customized products. Tailored blanks are a class of sheet metals characterized by the local variation of properties, attributable to the presence of different materials, different thickness distribution, and thermal treatments. In the manufacturing of tailored welded blanks, welding and forming processes cover a central role. In this framework, friction stir welding demonstrated to be a suitable candidate technology for the production by joining of tailored blanks. Indeed, sheet metals welded by this solid-state welding process typically exhibit high formability when compared to the conventional welding methods. Due to the improved formability, a good deal of attention has been recently given toward the single point incremental forming (SPIF) process and its integration with FSW. Remarkable efforts have been dedicated to the numerical modeling of the SPIF of metallic alloy sheets jointed by FSW. The main criticisms in these models are related to the definition of the mechanical properties of the materials, which are affected by the structural alteration induced by the FSW. The present work aims to model the local alterations in the mechanical properties and to analyze how these local characteristics affect the formability of the blanks. With this purpose, a 20 mm wide sample collected from a FS welded blank of aluminum alloy AA6082 has been modeled using the mechanical properties variation achieved in a previous work. The influence of this local variation in properties has been assessed using a Finite Element Model Updating strategy.

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