TY - JOUR
T1 - Quantitative assessment of second phase particles characteristics and its role on the deformation response of a Mg-8Al-0.5Zn alloy
AU - Sarvesha, R.
AU - Alam, W.
AU - Gokhale, A.
AU - Guruprasad, T. S.
AU - Bhagavath, S.
AU - Karagadde, S.
AU - Jain, J.
AU - Singh, S. S.
N1 - Funding Information:
Authors thank Prof. Prabhat Munshi, IIT Kanpur for his helpful discussion on X-ray tomography and use of Avizo software. Authors are thankful to the financial support from Indian Institute of Technology Kanpur, India (Grant no: IITK/MET/2015372 ) for carrying out this work. Authors are also grateful to Prof. Warren Poole of University of British Columbia for providing the AZ80 Mg alloy. We acknowledge the support from Electron Microscopy Facility at Advanced Center of Materials Science (ACMS) at IIT Kanpur for characterization. Authors would also like to thank the Sophisticated Analytical Instrument Facility (SAIF) at Indian Institute of Technology Bombay.
Funding Information:
Authors thank Prof. Prabhat Munshi, IIT Kanpur for his helpful discussion on X-ray tomography and use of Avizo software. Authors are thankful to the financial support from Indian Institute of Technology Kanpur, India (Grant no: IITK/MET/2015372)for carrying out this work. Authors are also grateful to Prof. Warren Poole of University of British Columbia for providing the AZ80 Mg alloy. We acknowledge the support from Electron Microscopy Facility at Advanced Center of Materials Science (ACMS)at IIT Kanpur for characterization. Authors would also like to thank the Sophisticated Analytical Instrument Facility (SAIF)at Indian Institute of Technology Bombay.
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/6/24
Y1 - 2019/6/24
N2 - The deformation and fracture characteristics of magnesium alloys are strongly influenced by the second phase particles. This study comprehensively investigates the three-dimensional microstructure of second phase particles, mechanical properties of individual particles and their effect on the bulk deformation behavior of the AZ80 magnesium alloy. X-ray microtomography has been used to quantify the 3D microstructure of second phase particles (Mg17Al12 and Al8Mn5)in terms of volume, morphology, and size. Further, to elucidate the contribution of second phase particles on the bulk deformation of the alloy, mechanical properties of the individual particle were obtained using nanoindentation. Both second phase particles were found to exhibit higher elastic modulus and hardness than the matrix. Post-indentation analysis using a combination of scanning electron microscopy (SEM)and atomic force microscopy (AFM)showed the presence of pile-up in the vicinity of indents made on both the particles. Further, 3D microstructure-based finite element simulations predicted that the damage starts with the fracture of the particles at the sites of high stress concentration which is corroborated with fractography analysis.
AB - The deformation and fracture characteristics of magnesium alloys are strongly influenced by the second phase particles. This study comprehensively investigates the three-dimensional microstructure of second phase particles, mechanical properties of individual particles and their effect on the bulk deformation behavior of the AZ80 magnesium alloy. X-ray microtomography has been used to quantify the 3D microstructure of second phase particles (Mg17Al12 and Al8Mn5)in terms of volume, morphology, and size. Further, to elucidate the contribution of second phase particles on the bulk deformation of the alloy, mechanical properties of the individual particle were obtained using nanoindentation. Both second phase particles were found to exhibit higher elastic modulus and hardness than the matrix. Post-indentation analysis using a combination of scanning electron microscopy (SEM)and atomic force microscopy (AFM)showed the presence of pile-up in the vicinity of indents made on both the particles. Further, 3D microstructure-based finite element simulations predicted that the damage starts with the fracture of the particles at the sites of high stress concentration which is corroborated with fractography analysis.
UR - https://www.scopus.com/pages/publications/85065868710
UR - https://www.scopus.com/inward/citedby.url?scp=85065868710&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2019.05.052
DO - 10.1016/j.msea.2019.05.052
M3 - Article
AN - SCOPUS:85065868710
SN - 0921-5093
VL - 759
SP - 368
EP - 379
JO - Materials Science and Engineering A
JF - Materials Science and Engineering A
ER -