scholarly journals Aluminum Foam-Filled Steel Tube Fabricated from Aluminum Burrs of Die-Castings by Friction Stir Back Extrusion

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 124 ◽  
Author(s):  
Yoshihiko Hangai ◽  
Ryusei Kobayashi ◽  
Ryosuke Suzuki ◽  
Masaaki Matsubara ◽  
Nobuhiro Yoshikawa
Keyword(s):  
Aluminum Foam ◽  
Steel Tube ◽  
Coated Steel ◽  
Compression Tests ◽  
Steel Tubes ◽  
Friction Stir ◽  
Compression Properties ◽  
Al Foam ◽  
Foam Filled ◽  
Die Castings

A mixture of Al burrs of Al high-pressure die-castings and a blowing agent powder was used to fabricate Al foam-filled steel tubes by friction stir back extrusion (FSBE). It was shown that the mixture can be sufficiently consolidated to form an Al precursor that is coated on the inner surface of a steel tube by the plastic flow generated during FSBE. Namely, a precursor coated steel tube can be fabricated from Al burrs by FSBE. By heat treatment of the precursor coated steel tube, an Al foam-filled steel tube can be fabricated. Al foam was sufficiently filled in the steel tube, and the porosity was almost homogeneously distributed in the entire sample. In compression tests of the samples, the Al foam-filled steel tube fabricated from Al burrs exhibited similar compression properties to an Al foam-filled steel tube fabricated from the bulk Al precursor. Consequently, it was shown that an Al foam-filled steel tube cost-effectively fabricated from Al burrs by FSBE compares favorably with an Al foam-filled steel tube fabricated from the bulk Al precursor.

Study of the Torsional Behavior of Aluminum Foam-Filled Galvanized Steel Tubes after High Temperature

2018 ◽  
Vol 773 ◽  
pp. 238-243
Author(s):  
Zhan Guang Wang ◽  
Yang Wang
Keyword(s):  
High Temperature ◽  
Aluminum Foam ◽  
Load Capacity ◽  
Steel Tube ◽  
Galvanized Steel ◽  
Steel Tubes ◽  
Torsional Load ◽  
Torsional Behavior ◽  
Before And After ◽  
Foam Filled

Torsional test of aluminum foam-filled galvanized steel tube before and after high temperature is performed. The influence of temperature, porosity of aluminum foam and steel ratio on torsional behavior of aluminum foam galvanized steel tubes were analyzed. Experimental results showed that torsional curves of aluminum foam-filled galvanized steel tube before and after high temperature is similar, and can be divided into four stages: the elastic torsional stage, yield platform stage, descent stage and hardening stage; Its torsional load capacity decreases with increasing porosity of aluminum foam and increases at a higher steel content and slenderness ratio; after high temperature, torsional load capacity of galvanized steel tube decreased significantly. It was found that the strength reduction factor ratio under the elevated test temperature is higher than that recommended by British ECCS, Australian AS4100 and Chinese CECS 200-2006.

scholarly journals Fabrication of Aluminum Foam-Filled Thin-Wall Steel Tube by Friction Welding and Its Compression Properties

Materials ◽  
2014 ◽  
Vol 7 (9) ◽  
pp. 6796-6810 ◽  
Author(s):  
Yoshihiko Hangai ◽  
Masaki Saito ◽  
Takao Utsunomiya ◽  
Soichiro Kitahara ◽  
Osamu Kuwazuru ◽  
...  
Keyword(s):  
Friction Welding ◽  
Aluminum Foam ◽  
Steel Tube ◽  
Thin Wall ◽  
Compression Properties ◽  
Foam Filled

scholarly journals Compression Properties of Three-Layered Functionally Graded ADC12 Aluminum Foam Fabricated by Friction Stir Welding

2013 ◽  
Vol 54 (8) ◽  
pp. 1268-1273 ◽  
Author(s):  
Yoshihiko Hangai ◽  
Hiroto Kamada ◽  
Takao Utsunomiya ◽  
Soichiro Kitahara ◽  
Osamu Kuwazuru ◽  
...  
Keyword(s):  
Friction Stir Welding ◽  
Aluminum Foam ◽  
Functionally Graded ◽  
Friction Stir ◽  
Compression Properties

Steel Tube Bending with a Filling Medium of Fiber-Reinforced Ice (FRI)

2016 ◽  
Vol 703 ◽  
pp. 11-16 ◽  
Author(s):  
Takahiro Ohashi
Keyword(s):  
Low Temperature ◽  
Cross Section ◽  
Steel Tube ◽  
Filling Material ◽  
Fiber Reinforced ◽  
Compression Tests ◽  
Tube Bending ◽  
Steel Tubes ◽  
Crushing Strength ◽  
Temperature Melting

This paper proposes a new filling material, fiber-reinforced ice (FRI), for tube bending. In tube bending, lead and low temperature melting alloys have conventionally been utilized as the filling medium to prevent defects and to alleviate flattening of the tube’s cross section. However, these alloys are usually harmful to the environment (e.g., Pb, Bi-Pb-Sn-In, or Pb-Cd system alloys) or are expensive (e.g., In-Sn system alloys). In this study, the author utilized ice reinforced with the fiber of wastepaper for 3-point bending of JIS G 3452 SGP 32A steel tubes. Compression tests were conducted to analyze whether these tubes have crushing strength comparable to that of conventional fillings and sufficient ductility in low-speed deformation. The filling medium with more fiber effectively yielded less flattening.

scholarly journals Dynamic Axial Crushing of Empty and Foam-Filled Conical Aluminium Tubes: Experimental and Numerical Analysis

2014 ◽  
Vol 566 ◽  
pp. 305-309
Author(s):  
Fauziah Mat ◽  
K.A. Ismail ◽  
Masniezam Ahmad ◽  
Yaacob Sazali ◽  
Inayatullah Othman
Keyword(s):  
Carbon Steel ◽  
Steel Tube ◽  
Nonlinear Finite Element ◽  
Aluminium Foam ◽  
Fe Model ◽  
Steel Tubes ◽  
Foam Filling ◽  
Foam Filled ◽  
Initial Peak ◽  
Selection Of

This paper presents the crushing behaviour of empty and foam-filled conical tubes under axial dynamic loading. A nonlinear finite element (FE) model was developed and validated against experiments. The validated model was subsequently used to assess the beneficial of foam filling with regards to the variation in filler densities and tube materials. The results obtained were further analyzed and compared with straight tubes. We aim to evaluate the critical effective point for different density of fillers in foam-filled tubes based on specific energy absorption (SEA) value. The SEA value was highest for foam-filled conical aluminium tube with aluminium foam filler, followed by straight aluminium tube, straight carbon steel tube and conical carbon steel tube. Moreover, the initial peak force was found lower in aluminium tubes than carbon steel tubes and lower in conical tubes than that in straight tubes. The combination of conical aluminium tube and aluminium foam filler successfully convey the beneficial of foam filling and thus signify that proper combination and selection of tube and filler is vital in assessing the effectiveness of foam-filled tubes.

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