Studies Concerning the Hardening Capacity of Aluminium Alloys through Heat Treatment in Electromagnetic Field

Author(s):  
M. Stoicănescu ◽  
I. Giacomelli ◽  
Maria Simona Pantelimon
2007 ◽  
Vol 23 ◽  
pp. 201-204
Author(s):  
Maria Stoicănescu ◽  
I. Giacomelli ◽  
Maria Simona Pantelimon

It is well known that the aluminum alloys containing Cu and/or Mg lead to soluble compounds which themselves allow the hardening during the process of strengthening and ageing. At the same time, the hardening process during ageing takes a relatively long period of time, and the registered rises are generally not too high. There are presented studies regarding to alloy AlCu4Mg1,5Mn which was tested in several heat treatment conditions. These alloy, after final heat treatment of hardness by and ageing, suffers a sensitive hardening – the ageing is recommended for pieces used under medium and intense mechanical stresses Using the alternative electromagnetic fields is more efficient by 10 to 12% than stationary one, not only regarding to the period of ageing, but also regarding to the highest values of hardness; Also other specific results are given in the paper.


2010 ◽  
Vol 2 (1) ◽  
pp. 1795-1804 ◽  
Author(s):  
A. May ◽  
M.A. Belouchrani ◽  
S. Taharboucht ◽  
A. Boudras

2022 ◽  
Author(s):  
K. Ramesha ◽  
P. D. Sudersanan ◽  
Prem Kumar Mahto ◽  
Shaikh Mohammed Ismail ◽  
Ashwin C. Gowda ◽  
...  

Metals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1165 ◽  
Author(s):  
Hannes Fröck ◽  
Lukas Vincent Kappis ◽  
Michael Reich ◽  
Olaf Kessler

Age hardening aluminium alloys obtain their strength by forming precipitates. This precipitation-hardened state is often the initial condition for short-term heat treatments, like welding processes or local laser heat treatment to produce tailored heat-treated profiles (THTP). During these heat treatments, the strength-increasing precipitates are dissolved depending on the maximum temperature and the material is softened in these areas. Depending on the temperature path, the mechanical properties differ between heating and cooling at the same temperature. To model this behavior, a phenomenological material model was developed based on the dissolution characteristics and experimental flow curves were developed depending on the current temperature and the maximum temperature. The dissolution characteristics were analyzed by calorimetry. The mechanical properties at different temperatures and peak temperatures were recorded by thermomechanical analysis. The usual phase transformation equations in the Finite Element Method (FEM) code, which were developed for phase transformation in steels, were used to develop a phenomenological model for the mechanical properties as a function of the relevant heat treatment parameters. This material model was implemented for aluminium alloy 6060 T4 in the finite element software LS-DYNA (Livermore Software Technology Corporation).


2014 ◽  
Vol 931-932 ◽  
pp. 322-326
Author(s):  
Pinai Mungsantisuk

Al-Zn-Sn anode is not popular for corrosion prevention in marine environment as much as Al-Zn-In anode and Al-Zn-Hg anode because it requires proper heat treatment to obtain the optimum anode capacity. This paper investigates what factors would influence the anode performance of Al-Zn-Sn anode. The fine and homogeneous microstructure is the factor that plays important role to improve the anode capacity. The manufacturing techniques producing fine and homogeneous microstructure in aluminium alloys might be helpful to increase the performance of the anode without the heat treatment process.


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