TY - GEN
T1 - Finite element modeling of microstructural changes in dry and cryogenic machining of AZ31B magnesium alloy for enhanced corrosion resistance
AU - Pu, Z.
AU - Dillon, O. W.
AU - Lu, T.
AU - Jawahir, I. S.
AU - Umbrello, D.
AU - Puleo, D. A.
PY - 2013
Y1 - 2013
N2 - Unsatisfactory corrosion resistance is one of the major disadvantages of magnesium alloys that impede their wide application. Microstructural changes, especially grain sizes, of Mg alloys have significant influence on their corrosion resistance. Cryogenic machining was reported to effectively induce grain refinement on Mg alloys and has a potential to improve their corrosion resistance. It is important to model these changes so that proper machining conditions can be found to enhance the corrosion rate of Mg alloys. In this paper, a preliminary study was conducted to model the microstructural changes of AZ31B Mg alloy during dry and cryogenic machining using the finite element (FE) method and a user subroutine based on the dynamic recystallization (DRX) mechanism of Mg alloys. Good agreement in terms of grain size and affected layer thickness was found between experimental and predicted results. A numerical study was conducted using this model to investigate the influence of rake angle on microstructural changes after cryogenic machining.
AB - Unsatisfactory corrosion resistance is one of the major disadvantages of magnesium alloys that impede their wide application. Microstructural changes, especially grain sizes, of Mg alloys have significant influence on their corrosion resistance. Cryogenic machining was reported to effectively induce grain refinement on Mg alloys and has a potential to improve their corrosion resistance. It is important to model these changes so that proper machining conditions can be found to enhance the corrosion rate of Mg alloys. In this paper, a preliminary study was conducted to model the microstructural changes of AZ31B Mg alloy during dry and cryogenic machining using the finite element (FE) method and a user subroutine based on the dynamic recystallization (DRX) mechanism of Mg alloys. Good agreement in terms of grain size and affected layer thickness was found between experimental and predicted results. A numerical study was conducted using this model to investigate the influence of rake angle on microstructural changes after cryogenic machining.
KW - Cryogenic machining
KW - Dynamic Recrystallization (DRX)
KW - Finite Element Method (FEM)
KW - Mg alloy
KW - Microstructrual changes
UR - https://www.scopus.com/pages/publications/84892701488
UR - https://www.scopus.com/pages/publications/84892701488#tab=citedBy
M3 - Conference contribution
AN - SCOPUS:84892701488
SN - 9781627486972
T3 - Transactions of the North American Manufacturing Research Institution of SME
SP - 358
EP - 367
BT - 41st North American Manufacturing Research Conference 2013 - Transactions of the North American Manufacturing Research Institution of SME, NAMRC 2013
T2 - 41st North American Manufacturing Research Conference 2013, NAMRC 2013
Y2 - 10 June 2013 through 14 June 2013
ER -