Effect of high temperature solution heat treatment time on quality index and morphology of A356 DC alloy

Author(s):  
M.R. Mohamad Yasin ◽  
S.N.A. Abdul Razak
2006 ◽  
Vol 519-521 ◽  
pp. 771-776 ◽  
Author(s):  
M. Asano ◽  
Tadashi Minoda ◽  
Y. Ozeki ◽  
Hideo Yoshida

The effects of the copper content on the bendability of Al-Mg-Si alloy T4 sheets were investigated. The Al-Mg-Si alloys with less than 0.01mass%Cu, 0.4mass%Cu and 0.8mass%Cu were prepared, and the time of solution heat treatment was changed to obtain different dispersion conditions of the second phase particles and to obtain different shear band formation conditions by bending. For the samples with less than 0.01mass%Cu and 0.4mass%Cu, no cracks were observed during the bending. For the sample with 0.8mass%Cu, the maximum depth of the crack by bending increased with the time of solution heat treatment up to 75 seconds, and then decreased over 75 seconds. The second phase particles decreased by increasing the solution heat treatment time, while the formation of shear bands by bending increased by increasing the solution heat treatment time and the copper content. The cause of the occurrence and the propagation of cracks by bending are considered to be the combined effect of the shear band formation across some grains and the micro-voids formed around the second phase particles. Improving of the bendability requires a decrease in the size and number of the second phase particles and/or reduced shear band formation during the bending.


Alloy Digest ◽  
1953 ◽  
Vol 2 (8) ◽  

Abstract Chromium Copper-999 is a copper-chromium-silicon alloy which is softened by a high-temperature solution anneal and quench, and will acquire improved properties with a low-temperature precipitation heat treatment. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness and creep. It also includes information on corrosion resistance as well as heat treating, machining, and joining. Filing Code: Cu-10. Producer or source: American Brass Company.


2013 ◽  
Vol 773-774 ◽  
pp. 785-794
Author(s):  
Amir Mahmoudi ◽  
Mohammad Esmailian ◽  
Seyed Eshagh Aghamiri

In this investigation, AISI321 steel was solution - stabilizing post heat treated in various temperatures and times after SMAW welding. Results show, increasing of temperature in solution and stabilizing heat treatment, raise sensitization; in addition, by increasing of the solution heat treatment time, sensitization enhances. However, increasing the time of stabilizing heat treatment creates less chrome carbides, so the sensitization decreases. These heat treatments reduce the amount of delta ferrite and change its morphology from narrow and acicular shape to discontinues and separate globular particles. Moreover, more carbide and carbonitrid of Ti and Nb are also created.


Alloy Digest ◽  
1967 ◽  
Vol 16 (3) ◽  

Abstract Chromium Copper-182 is a copper-chromium corrosion resistant alloy which is softened by a high-temperature solution anneal and quench, and will improved acquire properties with a low temperature precipitation-hardening heat treatment. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness and creep. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-174. Producer or source: Anaconda American Brass Company.


2017 ◽  
Vol 23 (S1) ◽  
pp. 400-401 ◽  
Author(s):  
C.G. Garay-Reyes ◽  
I. K Gómez-Barraza ◽  
M. A. Ruiz-Esparza-Rodríguez ◽  
I. Estrada-Guel ◽  
J. P Flores-De los Ríos ◽  
...  

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