TY - JOUR
T1 - Damage micromechanisms in high Mn and Zn content 7XXX aluminum alloys
AU - Bhuiyan, Md Shahnewaz
AU - Toda, Hiroyuki
AU - Uesugi, Kentaro
AU - Takeuchi, Akihisa
AU - Watanabe, Yoshio
N1 - Funding Information:
The authors gratefully acknowledge the support from the New Energy and Industrial Technology Development Organization (part of the Technological Development of Innovative New Structural Materials, Project HAJJ262715). The synchrotron radiation experiments were performed with the approval of JASRI through proposal No.2013B1324, 2014A1018, and 2014B1157.
Funding Information:
The authors gratefully acknowledge the support from the New Energy and Industrial Technology Development Organization (part of the Technological Development of Innovative New Structural Materials , Project HAJJ262715 ). The synchrotron radiation experiments were performed with the approval of JASRI through proposal No. 2013B1324 , 2014A1018 , and 2014B1157 .
Publisher Copyright:
© 2020
PY - 2020/8/19
Y1 - 2020/8/19
N2 - The nucleation, growth, and coalescence of microvoids are examined in high Zn and Mn content 7XXX aluminum alloys using high-resolution synchrotron X-ray microtomography. The results have clearly shown that the addition of Mn content (0.6% mass) increases the ultimate tensile strength with limited ductility. The loading step in which each microvoid was nucleated together with its nucleation site is determined by tracking the microvoids in reverse chronological order from the final loading step towards the initial stress-free loading step. It was observed that microvoids were initiated due to particle cracking, and void nucleation occurs continuously with the applied strain. Furthermore, it was also observed that the particle underwent multiple fractures. It was concluded the ductile fracture was dominated by the nucleation and growth of microvoids due to particle fracture.
AB - The nucleation, growth, and coalescence of microvoids are examined in high Zn and Mn content 7XXX aluminum alloys using high-resolution synchrotron X-ray microtomography. The results have clearly shown that the addition of Mn content (0.6% mass) increases the ultimate tensile strength with limited ductility. The loading step in which each microvoid was nucleated together with its nucleation site is determined by tracking the microvoids in reverse chronological order from the final loading step towards the initial stress-free loading step. It was observed that microvoids were initiated due to particle cracking, and void nucleation occurs continuously with the applied strain. Furthermore, it was also observed that the particle underwent multiple fractures. It was concluded the ductile fracture was dominated by the nucleation and growth of microvoids due to particle fracture.
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U2 - 10.1016/j.msea.2020.139423
DO - 10.1016/j.msea.2020.139423
M3 - Article
AN - SCOPUS:85087874427
SN - 0921-5093
VL - 793
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
M1 - 139423
ER -