Strength Variation in Processing Multiport Extrusion Tubes of A1100 and A3102 Alloys

Published on Jun 1, 2019in Journal of Materials Engineering and Performance1.819
· DOI :10.1007/S11665-019-04132-W
Kai Li1
Estimated H-index: 1
(SJTU: Shanghai Jiao Tong University),
Dayong Li19
Estimated H-index: 19
(SJTU: Shanghai Jiao Tong University)
+ 3 AuthorsYinghong Peng25
Estimated H-index: 25
(SJTU: Shanghai Jiao Tong University)
The manufacturing process of multiport extrusion tubes generally includes homogenization, extrusion, roll leveling and heat treatment. In order to investigate the influence of the manufacturing procedures on strength variation of multiport extrusion tubes made of A1100 and A3102 alloys, the tube fabrication experiments and following materials characterization are carried out. The alloys’ stress–strain curves after every processing procedure are measured, and pressure-bearing capacity of the tubes is tested. The tubes’ strength and pressure-bearing capacity reach the peak values after straightening process and drop to the minimum after annealing. The contributions of solid solution hardening, grain boundary hardening and constituent particle strengthening to yield strength are evaluated. It is deduced that cluster hardening is the dominant strengthening mechanism for the as-homogenized and as-extruded samples; the contribution of clusters is second to work hardening after straightening process; slight cold work in conjunction with high-temperature annealing accelerates abnormal grain growth. The loss of strength increment from clusters can be interpreted by the remarkable reduction of high-angle grain boundaries after abnormal grain growth.
📖 Papers frequently viewed together
4 Authors (Raed A. Mahmood, ..., Kamil Jawad)
#1W.W. Sun (Monash University, Clayton campus)H-Index: 8
#2Yuman Zhu (Monash University, Clayton campus)H-Index: 25
Last. Christopher Hutchinson (Monash University, Clayton campus)H-Index: 48
view all 7 authors...
High-strength aluminum alloys are important for lightweighting vehicles and are extensively used in aircraft and, increasingly, in automobiles. The highest-strength aluminum alloys require a series of high-temperature “bakes” (120° to 200°C) to form a high number density of nanoparticles by solid-state precipitation. We found that a controlled, room-temperature cyclic deformation is sufficient to continuously inject vacancies into the material and to mediate the dynamic precipitation of a very f...
#1Jian Han (UPenn: University of Pennsylvania)H-Index: 14
#2Spencer L. Thomas (UPenn: University of Pennsylvania)H-Index: 7
Last. David J. Srolovitz (UPenn: University of Pennsylvania)H-Index: 100
view all 3 authors...
Abstract Grain boundaries (GBs) are central defects for describing polycrystalline materials, and playing major role in a wide-range of physical properties of polycrystals. Control over GB kinetics provides effective means to tailor polycrystal properties through material processing. While many approaches describe different GB kinetic phenomena, this review provides a unifying concept for a wide range of GB kinetic behavior. Our approach rests on a disconnection description of GB kinetics. Disco...
#1Ding Tang (SJTU: Shanghai Jiao Tong University)H-Index: 13
#2Xiaohui Fan (SJTU: Shanghai Jiao Tong University)H-Index: 4
Last. Huamiao Wang (SJTU: Shanghai Jiao Tong University)H-Index: 25
view all 6 authors...
Abstract In addition to extrusion, the post-processing of rolling and brazing has significant effect on the mechanical properties of multi-port tubes. The aluminum micro channel tubes, especially the seam welding zone in the internal webs, are investigated in terms of mechanical tests, microstructure characterization, and finite element analysis. The effect of the post-process of rolling are quantified by varying amount of rolling reduction ratios. Tensile strength and pressure bearing capacity ...
#1Junquan Yu (SDU: Shandong University)H-Index: 1
#2Guoqun Zhao (SDU: Shandong University)H-Index: 43
Abstract Fine nanostructures of bonding interfaces of weld seams formed by porthole die extrusion in the absence/presence of a gas-pocket behind the bridge of the extrusion die were systematically studied to understand the underlying interfacial bonding mechanisms. Interfacial grain boundaries, nanoscale amorphous layers, and three kinds of new interfacial structures were found. Specifically, it was found that, in the absence of a gas-pocket behind the bridge, there are two distinctly different ...
#1Song Bai (CSU: Central South University)H-Index: 17
#2Zhiyi Liu (CSU: Central South University)H-Index: 22
Last. An Wang (CSU: Central South University)H-Index: 5
view all 5 authors...
Abstract The effect of 2.5% pre-stretching on the solute clustering and subsequent precipitation of an initial aged Al-Cu-Mg-Ag alloy is investigated by quantitative transmission electron microscopy (TEM) and atom probe tomography (APT) technique. In present work, 2.5% pre-stretching is found to restrict the dense precipitation of Ω phase, leading to the slower age-hardening response at 180 °C. The dominant Mg-Ag co-clustering, as revealed in non-stretched alloy, becomes weak by 2.5% pre-stretch...
Effect of microstructural evolution on sagging behavior of aluminum foil was investigated during the brazing thermal cycle. During the brazing thermal cycle, the sagging behavior consists of three stages: slight sagging stage, accelerative sagging stage and slow sagging stage. The sagging of cold-rolled aluminum foil mainly occurs in the accelerative sagging stage, which is governed by recovery under external stress in the sagging test. The coarse recrystallized grain is responsible for the slow...
#1Xiaohui Fan (SJTU: Shanghai Jiao Tong University)H-Index: 4
#2Ding Tang (SJTU: Shanghai Jiao Tong University)H-Index: 13
Last. Yinghong Peng (SJTU: Shanghai Jiao Tong University)H-Index: 25
view all 5 authors...
Abstract Aluminum multi-port extrusion tube is processed by the porthole die extrusion and the internal tube walls are welded through the solid state metallurgical bonding. In order to observe the development of grains and their orientations under severe plastic deformation and solid state welding, the extrusion butt together with the die is quenched immediately after extrusion to preserve the grain structure in the processing. The forming histories of selected material points are obtained by an...
#1Amit Joshi (IITR: Indian Institute of Technology Roorkee)H-Index: 8
#2Nikhil Kumar (IITR: Indian Institute of Technology Roorkee)H-Index: 15
Last. S.K. Nath (IITR: Indian Institute of Technology Roorkee)H-Index: 15
view all 5 authors...
Mechanical properties and microstructure evolution of Al 2014 alloy subjected to cryoforging (MDF) to a cumulative strain of 1.2, 1.8, and 2.4 were investigated in the present work. The deformed samples after 4 cycles at a cumulative strain of 2.4 shows the formation of ultrafine grain sizes in the range of 100-450 nm with high-angle grain boundaries as observed from TEM analysis. The tensile and hardness of the deformed sample were measured by Universal Testing machine and Vickers hardness Test...
#1M. Shakiba (Applied Science Private University)H-Index: 2
#2N. Parson (Alcan)H-Index: 2
Last. X-Grant Chen (Applied Science Private University)H-Index: 24
view all 3 authors...
Abstract The hot deformation behavior of dilute Al–Fe–Si alloys containing various amounts of Mn (0.1–0.2 wt%) and Cu (0.05–0.31 wt%) was investigated by hot compression tests conducted over a range of deformation temperatures (400–550 °C) and strain rates (0.01–10 s −1 ). Both Mn and Cu in a solid solution have a significant influence on the hot workability of dilute Al–Fe–Si alloys. On a wt% basis, Mn exhibits a stronger strengthening effect compared with Cu. The activation energies for hot de...
The evolution of grain size and texture during annealing at 700 °C of a low C, Si-Al electrical steel strip is investigated in samples deformed between 3 and 25% in tension. After an incubation period, which decreases as the magnitude of the pre-deformation increases, the grain size-time relationship exhibits two different stages. Initially, the grain growth occurs in some especial grains until they consume the deformed microstructure. In contrast, during the second stage the rate of growth decr...
Cited By1
#1Kai Li (SJTU: Shanghai Jiao Tong University)H-Index: 1
#2Tianxia Zou (SJTU: Shanghai Jiao Tong University)H-Index: 8
Last. Da Shu (SJTU: Shanghai Jiao Tong University)H-Index: 22
view all 5 authors...
Abnormally large grains (ALGs) appear after annealing of prestrained multiport extrusion (MPE) tubes, which will significantly degrade the mechanical properties of the tubes. In the present work, the underpinning mechanisms of ALGs’ formation are probed through experiments. MPE tubes made of A3102 alloy are prestrained by roll leveling with different thickness reduction ratios and are then subjected to annealing at 600 °C for different times. Microstructural evolutions during annealing are chara...
This website uses cookies.
We use cookies to improve your online experience. By continuing to use our website we assume you agree to the placement of these cookies.
To learn more, you can find in our Privacy Policy.