Evaluation of mechanical properties of porous 6061 alloys fabricated by the powder compression and induction heating process

2004 ◽  
Vol 35 (8) ◽  
pp. 2419-2426 ◽  
Author(s):  
S. W. Youn ◽  
C. G. Kang
Keyword(s):  
Mechanical Properties ◽  
Induction Heating ◽  
Heating Process ◽  
Powder Compression

The effect of process parameters on cell morphology in cellular aluminium alloy fabricated by powder compression and the induction heating process

2003 ◽  
Vol 217 (2) ◽  
pp. 201-211 ◽  
Author(s):  
S W Youn ◽  
C G Kang
Keyword(s):  
Mechanical Properties ◽  
Aluminium Alloy ◽  
Induction Heating ◽  
Process Parameters ◽  
Cell Structure ◽  
Heating Process ◽  
Pressing Pressure ◽  
Foaming Process ◽  
Powder Compression ◽  
Foaming Temperature

In a foaming process, accurate control of the foaming temperature and heating rate is very important in terms of reproducibility of mechanical properties. Generally, foaming of the precursor is performed in an electric furnace, which is preheated at temperatures higher than the desired temperature. In this case, accurate control of the precursor temperature is difficult. In this study, cellular aluminium alloy having a closed cell structure is fabricated by applying the powder compact method and an induction heating process. The induction heating process was used for foaming of the precursor in order to improve the reproducibility of mechanical properties. To establish the cellular aluminium fabrication conditions, the effects of process parameters such as the titanium hydride content (0.3-1.5 wt%), pressing pressure of the foamable precursor (50-150 kN) and the foaming temperature (610-690°C) on the pore morphology were investigated and porosities (%)-foaming temperature curves were obtained.

Effect of Repeated Induction Heating on Fatigue Crack Propagation in SAE 52100 Bearing Steel

2011 ◽  
Vol 217-218 ◽  
pp. 1266-1271 ◽  
Author(s):  
Hitonobu Koike ◽  
Edson Costa Santos ◽  
Katsuyuki Kida ◽  
Takashi Honda ◽  
Justyna Rozwadowska
Keyword(s):  
Mechanical Properties ◽  
Crack Propagation ◽  
Induction Heating ◽  
High Strength ◽  
Bearing Steel ◽  
Rolling Contact ◽  
Heating Process ◽  
Cyclic Heat Treatment ◽  
Heat Treated ◽  
Cyclic Heat

Martensitic high carbon high strength SAE 52100 bearing steel is one of the main alloys used for rolling contact applications when high wear and fatigue resistance are required. Refining the microstructure of steel improves its mechanical properties (e.g. toughness). In this work SAE 52100 specimens were exposed to repeated induction heating process and rotation bending tests were performed using single- and repeatedly heat-treated material in order to investigate the influence of this cyclic heat treatment on the mechanical properties of SAE 52100. In an attempt to determine the effect of the repeated induction heating and quenching on the material, we focused our observations on the internal fatigue “fisheye" cracks. It was noted that crack propagation was successfully halted by the refined microstructure in heat affected zone, therefore it can be concluded that repeated induction heating and quenching processes help to slow down the propagation of fisheye cracks in SAE52100 steel bars.

A numerical study of the effect of the number of turns of coil on the heat produced in the induction heating process in the 3d model

2018 ◽  
Vol 18 (3) ◽  
pp. 408-419
Author(s):  
A J shokri ◽  
M H Tavakoli ◽  
A Sabouri Dodaran ◽  
M S Akhondi Khezrabad ◽  
◽  
...  
Keyword(s):  
Induction Heating ◽  
3D Model ◽  
Numerical Study ◽  
Heating Process

scholarly journals The induction heating process modelling of the waveguide paths’ flanges

2021 ◽  
Vol 1047 (1) ◽  
pp. 012027
Author(s):  
A V Milov ◽  
V S Tynchenko ◽  
S O Kurashkin ◽  
V E Petrenko ◽  
D V Rogova ◽  
...  
Keyword(s):  
Induction Heating ◽  
Process Modelling ◽  
Heating Process

Physical property of 3D-printed sinusoidal pattern using shape memory TPU filament

2020 ◽  
Vol 90 (21-22) ◽  
pp. 2399-2410 ◽  
Author(s):  
Shahbaj Kabir ◽  
Hyelim Kim ◽  
Sunhee Lee
Keyword(s):  
Mechanical Properties ◽  
Tensile Test ◽  
Shape Memory ◽  
Fused Deposition Modeling ◽  
Loss Modulus ◽  
Thermoplastic Polyurethane ◽  
Heating Process ◽  
Fused Deposition ◽  
3D Printed ◽  
Sinusoidal Pattern

This study has investigated the physical properties of 3D-printable shape memory thermoplastic polyurethane (SMTPU) filament and its 3D-printed sinusoidal pattern obtained by fused deposition modeling (FDM) technology. To investigate 3D filaments, thermoplastic polyurethane (TPU) and SMTPU filament were examined by conducting infrared spectroscopy, x-ray diffraction (XRD), dynamic mechanical thermal analysis (DMTA), differential scanning calorimetry (DSC) and a tensile test. Then, to examine the 3D-printed sinusoidal samples, a sinusoidal pattern was developed and 3D-printed. Those samples went through a three-step heating process: (a) untreated state; (b) 5 min heating at 70°C, cooling for 30 min at room temperature; and (c) a repeat of step 2. The results obtained by the three different heating processes of the 3D-printed sinusoidal samples were examined by XRD, DMTA, DSC and the tensile test to obtain the effect of heating or annealing on the structural and mechanical properties. The results show significant changes in structure, crystallinity and thermal and mechanical properties of SMTPU 3D-printed samples due to the heating steps. XRD showed the increase in crystallinity with heating. In DMTA, storage modulus, loss modulus and the tan σ peak position also changed for various heating steps. The DSC result showed that the Tg for different steps of the SMTPU 3D-printed sample remained almost the same at around 51°C. The tensile property of the TPU 3D-printed sinusoidal sample decreased in terms of both load and elongation with increased heating processes, while for the SMTPU 3D-printed sinusoidal sample, the load decreased but elongation increased about 2.5 times.

Advantages of Induction Heat Treatment in the Application of Self-Fluxing Alloy to Boiler Tubes

1998 ◽  
Author(s):  
A. Tomiguchi ◽  
Y. Sochi ◽  
Y. Matsubara
Keyword(s):  
Heat Treatment ◽  
Service Life ◽  
Induction Heating ◽  
Corrosion And Wear ◽  
Hard Coatings ◽  
Heating Process ◽  
Induction Heat ◽  
Induction Heat Treatment ◽  
Boiler Tubes ◽  
Bent Pipe

Abstract This study focuses on two major advantages of induction heating over flame heating in the treatment of coated boiler tubes. In both cases the induction heating process is simple, fast and effective. Firstly, we will show how the the use of induction heating results in exceptionally thick and hard coatings with low porosity. Having high corrosion and wear resistant properties, the products can satisfy industry's needs for reliable coatings with a long service life. Next, the study will detail how a pipe with the coating already applied can be simultaneously bent by induction heating while the coating is melted and fused to the pipe. The result is a thicker, more even and reliable coating than that accomplished by the flame sprayed method on a bent pipe. The process is not only less cumbersome, but again provides a superior product for the market.

Steel Grades Adapted to the Thixoforging Process: Metallurgical Structures and Mechanical Properties

2006 ◽  
Vol 116-117 ◽  
pp. 712-716 ◽  
Author(s):  
Marc Robelet ◽  
Ahmed Rassili ◽  
Dirk Fischer
Keyword(s):  
Mechanical Properties ◽  
Liquid Fraction ◽  
Solidus Temperature ◽  
Process Temperature ◽  
Heating Process ◽  
Work Piece ◽  
Inductive Heating ◽  
Steel Grades ◽  
Automotive Part ◽  
Semi Solid

Thixoforming of steel offers the advantages of casting technology in combination with high mechanical strength that can only be achieved by forging. The progress in establishing this technology in industry depends on the success in the development of suitable steel grades. Recent investigations dealt with the development of steel grades that are especially adapted to the thixoforming process. For this, alloys were developed with a lower solidus temperature and a wider process temperature range compared to classic forging steels. In consequence, the inductive heating process is more tolerant to inaccuracies and for a given liquid fraction the process temperature window is easier to handle. It is desired to obtain great degrees of deformation at rather low forming forces as these parameters determine the size of the needed presses. This behaviour is affected by the present liquid fraction in the slug and the heat transfer between work piece and die. It was detected that variations of the forming force have a direct influence on the quality of the thixoformed parts. In order to make the thixoforming technology of steels competitive versus other forming technologies, the parts must show a favourable microstructure and thus, good in-use properties. In this paper various solutions are compared. The main results obtained in the optimization research, namely, the steel grades adapted to semi-solid forming, the resulting process parameters and the mechanical properties of thixoforming parts will be presented for two exemplary steel grades. By producing a real automotive part, thixoforging of steels with regard to the adapted materials and to the ongoing industrial implementation of this process is proved.

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