TY - JOUR
T1 - Comparative hot deformation characters of Al-Mn-Mg-RE alloy and Al-Mn-Mg-RE-Ti alloy
AU - Jiang, Fulin
AU - Zhang, Hui
AU - Ji, Xiankun
AU - Meng, Xianna
AU - Li, Luoxing
N1 - Funding Information:
This work is supported by the Program of International Science and Technology Cooperation (No. 2010DFB70180 ) and the National Basic Research (973) Program of China (No. 2009CB623704 ).
PY - 2014/2/10
Y1 - 2014/2/10
N2 - The hot deformation characters of two Al-Mn-Mg-RE alloys (without and with Ti addition, respectively) were studied by hot compression tests, and the deformed microstructures were observed by optical microscopy and transmission electron microscopy, respectively. The results show that the flow stress, hot deformation activation energy and stress exponent were higher with the addition of Ti during hot deformation. Less indistinct subgrain boundaries were also obtained with addition of Ti. The main enriched rare earth constituent particles could make positive purifying effects on impurity elements of Fe and Si in the Al-Mn-Mg-RE alloy. While the addition of Ti not only promoted the formation of a more stable Ti2 Al20 (Cex, La1-x) phase, but also resulted in more refined and dispersive constituent particles, which could improve the hot workability of the alloy.
AB - The hot deformation characters of two Al-Mn-Mg-RE alloys (without and with Ti addition, respectively) were studied by hot compression tests, and the deformed microstructures were observed by optical microscopy and transmission electron microscopy, respectively. The results show that the flow stress, hot deformation activation energy and stress exponent were higher with the addition of Ti during hot deformation. Less indistinct subgrain boundaries were also obtained with addition of Ti. The main enriched rare earth constituent particles could make positive purifying effects on impurity elements of Fe and Si in the Al-Mn-Mg-RE alloy. While the addition of Ti not only promoted the formation of a more stable Ti2 Al20 (Cex, La1-x) phase, but also resulted in more refined and dispersive constituent particles, which could improve the hot workability of the alloy.
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U2 - 10.1016/j.msea.2013.12.004
DO - 10.1016/j.msea.2013.12.004
M3 - Article
AN - SCOPUS:84890262258
SN - 0921-5093
VL - 595
SP - 10
EP - 17
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
ER -