Strength and cracking resistance of commercial aluminum alloys 1560 and 5083 after severe plastic deformation via angular pressing. / Markushev, M. V.; Murashkin, M. Yu.
In: Russian Metallurgy (Metally), Vol. 2005, No. 5, 01.09.2005, p. 398-405.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Strength and cracking resistance of commercial aluminum alloys 1560 and 5083 after severe plastic deformation via angular pressing
AU - Markushev, M. V.
AU - Murashkin, M. Yu
PY - 2005/9/1
Y1 - 2005/9/1
N2 - The effects of the submicrocrystalline (SMC) and microcrystalline (MC) structures of plates made of 1560 (Al-6.5Mg-0.6Mn) and 5083 (Al-4.4Mg-0.7Mn-0. 15Cr) alloys subjected to severe plastic deformation (SPD) via angular pressing followed by annealing on the characteristics of their room-temperature static strength and cracking resistance have been studied. After SPD, the alloys with an SMC fragmented structure have a strength that is 10-15% higher than that of the 1560 alloy in the cold-worked state at the same ductility; however, their cracking resistance is two to five times lower than that of the annealed alloys with a recrystallized MC structure (after pressing and annealing at 350°C). Annealing of the SPD alloys at 200°C transforms the non-equilibrium deformed structure into an SMC grain structure. Against the background of an insignificant decrease in strength, this annealing increases the ductility and cracking-resistance characteristics in both alloys. The cracking resistance of the 5083 alloy almost reaches the level of the soft MC state. The causes of the dissimilar behavior of the alloys are analyzed. Apart from strong changes in the grain structure during treatment, the mechanical properties of the alloys are shown to substantially depend on their lattice parameter and phase composition.
AB - The effects of the submicrocrystalline (SMC) and microcrystalline (MC) structures of plates made of 1560 (Al-6.5Mg-0.6Mn) and 5083 (Al-4.4Mg-0.7Mn-0. 15Cr) alloys subjected to severe plastic deformation (SPD) via angular pressing followed by annealing on the characteristics of their room-temperature static strength and cracking resistance have been studied. After SPD, the alloys with an SMC fragmented structure have a strength that is 10-15% higher than that of the 1560 alloy in the cold-worked state at the same ductility; however, their cracking resistance is two to five times lower than that of the annealed alloys with a recrystallized MC structure (after pressing and annealing at 350°C). Annealing of the SPD alloys at 200°C transforms the non-equilibrium deformed structure into an SMC grain structure. Against the background of an insignificant decrease in strength, this annealing increases the ductility and cracking-resistance characteristics in both alloys. The cracking resistance of the 5083 alloy almost reaches the level of the soft MC state. The causes of the dissimilar behavior of the alloys are analyzed. Apart from strong changes in the grain structure during treatment, the mechanical properties of the alloys are shown to substantially depend on their lattice parameter and phase composition.
UR - http://www.scopus.com/inward/record.url?scp=33748678913&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:33748678913
VL - 2005
SP - 398
EP - 405
JO - Russian Metallurgy (Metally)
JF - Russian Metallurgy (Metally)
SN - 0036-0295
IS - 5
ER -
ID: 42940182