TY - JOUR
T1 - Effect of annealing on microstructure evolution and mechanical property of cold forged magnesium pipes
AU - Lu, Liwei
AU - Liu, Tianmo
AU - Tan, Ming Jen
AU - Chen, Jian
AU - Wang, Zhongchang
PY - 2012/8
Y1 - 2012/8
N2 - Microstructure evolution of pure Mg pipes forged at room temperature during annealing is investigated by electron backscatter diffraction with special focus on the textures and static recrystallization (SRX) mechanism. It is found that a series of twins, {101̄2}〈101̄1〉, {101̄2}-{1̄012}, {101̄3}〈303̄2〉, {101̄2}-{011̄2}, {101̄3}-{101̄2}, and {101̄1}〈101̄2〉, turn up in the as-forged Mg pipes, which play a crucial role in the SRX through acting as recrystallization sites and in refining grains during annealing, especially the contraction twins and triple junctions. Using several analytic techniques, the SRX textures and grain boundaries are characterized during the SRX formation and growth, and the restoration mechanism is discussed based on the impact of annealing temperature and time. Moreover, the annealing conditions are found to be key to affecting micro-hardness of Mg pipes by tailoring recrystallization, grain growth, and recovery and recrystallization duration.
AB - Microstructure evolution of pure Mg pipes forged at room temperature during annealing is investigated by electron backscatter diffraction with special focus on the textures and static recrystallization (SRX) mechanism. It is found that a series of twins, {101̄2}〈101̄1〉, {101̄2}-{1̄012}, {101̄3}〈303̄2〉, {101̄2}-{011̄2}, {101̄3}-{101̄2}, and {101̄1}〈101̄2〉, turn up in the as-forged Mg pipes, which play a crucial role in the SRX through acting as recrystallization sites and in refining grains during annealing, especially the contraction twins and triple junctions. Using several analytic techniques, the SRX textures and grain boundaries are characterized during the SRX formation and growth, and the restoration mechanism is discussed based on the impact of annealing temperature and time. Moreover, the annealing conditions are found to be key to affecting micro-hardness of Mg pipes by tailoring recrystallization, grain growth, and recovery and recrystallization duration.
KW - B. Wrought
KW - C. Heat treatments
KW - F. Microstructure
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U2 - 10.1016/j.matdes.2012.02.035
DO - 10.1016/j.matdes.2012.02.035
M3 - Article
AN - SCOPUS:84859983573
VL - 39
SP - 131
EP - 139
JO - International Journal of Materials in Engineering Applications
JF - International Journal of Materials in Engineering Applications
SN - 0264-1275
ER -