Friction stir welding of nano/ultrafine-grained AA2024 alloy produced through an accumulative roll bonding process

2022 ◽  
Author(s):  
M. Naseri ◽  
M. Alvand ◽  
D. Gholami ◽  
E. Borhani ◽  
H. Abdollah-Pour ◽  
...  
Keyword(s):  
Friction Stir Welding ◽  
Accumulative Roll Bonding ◽  
Bonding Process ◽  
Accumulative Roll Bonding Process ◽  
Roll Bonding ◽  
Friction Stir ◽  
Ultrafine Grained

Ultrafine Grained Microstructure in Al-Cu-Si Alloy Obtained by Accumulative Roll Bonding Process

2011 ◽  
Vol 702-703 ◽  
pp. 157-160
Author(s):  
Wahdat Ullah ◽  
Gouthama
Keyword(s):  
Accumulative Roll Bonding ◽  
Dynamic Recovery ◽  
Bonding Process ◽  
Ultrafine Grain ◽  
Strain Condition ◽  
Accumulative Roll Bonding Process ◽  
Roll Bonding ◽  
Transmission Electron ◽  
Ultrafine Grained ◽  
Ultrafine Grained Microstructure

An Ultrafine grain (UFG) microstructure is developed on the sheet of Al-2.4wt%Cu-0.3wt%Si alloy after three passes of accumulative roll bonding (ARB) process. The detailed of the microstructural features and phases at different strain condition has been studied by transmission electron microscopy (TEM). Observation indicates at the possibility of dynamic recovery and recrystallisation during the ARB processing itself. The material becomes ultrafine grains after three passes of ARB itself with the formation of dynamically recrystallised grains all over the sample. TEM evidence is presented in support of this proposal.

Microstructure of AA7075 Based Composite by Accumulative Roll Bonding Process

2015 ◽  
Vol 1123 ◽  
pp. 114-118 ◽  
Author(s):  
Agus Pramono ◽  
Lauri Kollo ◽  
Renno Veinthal
Keyword(s):  
Accumulative Roll Bonding ◽  
High Load ◽  
Bonding Process ◽  
Advanced Materials ◽  
Accumulative Roll Bonding Process ◽  
Roll Bonding ◽  
Alloy Series ◽  
Ultrafine Grained ◽  
Average Grain Size ◽  
Ultrafine Grained Materials

Accumulative Roll Bonding (ARB) is a Severe Plastic Deformation (SPD) process invented in order to fabricate ultrafine grained materials. Aluminum Alloy series 7075 (AA7075) is a metal as a matrix reinforced by Alumina Nanofiber (ANF). In the development of advanced materials, AA7075/ANF composite metal is very suitable if it is processed by ARB, due to the combination of high style roll that is capable of producing material properties better. Hardness of AA77075 without reinforcement reached 128.3 Hv10. The additions of ANF on AA7075 reduce the hardness of 103.2 Hv10. This is due to large deformation of high load on the ARB which results in decrease levels of precipitates as well as lower density and reduction in the average grain size.

Microstructural Evolution during Accumulative Roll-Bonding Process of a High Performance Copper Alloy

2011 ◽  
Vol 378-379 ◽  
pp. 597-600
Author(s):  
Seong Hee Lee ◽  
Daejin Yoon ◽  
Hiroshi Utsunomiya
Keyword(s):  
Microstructural Evolution ◽  
Accumulative Roll Bonding ◽  
Copper Alloy ◽  
High Performance ◽  
Rolling Direction ◽  
Bonding Process ◽  
Accumulative Roll Bonding Process ◽  
Small Aspect Ratio ◽  
Roll Bonding ◽  
Ultrafine Grained

Microstructural evolution of a copper alloy processed by accumulative roll-bonding (ARB) was investigated by EBSD analysis. The grains became thinner and elongated to the rolling direction with increasing the number of ARB cycles. The subdivision of the grains to the rolling direction actively begins to occur after 5 cycles of the ARB, resulting in formation of ultrafine grains with small aspect ratio. After 8 cycles, the ultrafine grained structure with the average grain diameter of 250nm developed in almost whole regions of the sample. In addition, the fraction of high-angle grain boundaries increased with the number of ARB cycles and reached about 0.7 after 8 cycles. The texture development of the ARB processed samples was different depending on the number of ARB cycles and the positions in the thickness.

Friction stir welding of ultrafine grained Al alloy 1100 produced by accumulative roll-bonding

2004 ◽  
Vol 50 (1) ◽  
pp. 57-60 ◽  
Author(s):  
Y.S. Sato ◽  
Y. Kurihara ◽  
S.H.C. Park ◽  
H. Kokawa ◽  
N. Tsuji
Keyword(s):  
Friction Stir Welding ◽  
Accumulative Roll Bonding ◽  
Al Alloy ◽  
Roll Bonding ◽  
Friction Stir ◽  
Ultrafine Grained
Sign in / Sign up

Export Citation Format

Share Document