Stabilizing nanoprecipitates in Al-Cu alloys for creep resistance at 300°C
نویسندگان
چکیده
منابع مشابه
Creep resistance of cast and aged Al–0.1Zr and Al–0.1Zr–0.1Ti (at.%) alloys at 300–400 C
Cast and aged Al–0.1Zr and Al–0.1Zr–0.1Ti (at.%) alloys, upon compressive creep deformation at 300–400 C, exhibit threshold stresses attributable to climb-controlled bypass of coherent Al3Zr and Al3(Zr1 xTix) precipitates. Al–0.1Zr–0.1Ti exhibits a smaller threshold stress than Al–0.1Zr, which is attributed principally to a reduced lattice parameter mismatch between the Al3(Zr1 xTix) precipitat...
متن کاملElemental separation in nanocrystalline Cu-Al alloys
Y. B. Wang, X. Z. Liao, Y. H. Zhao, J. C. Cooley, Z. Horita, and Y. T. Zhu School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006, Australia School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China Division of Materials Science and Technology, Los Alamos National Laboratory, Los Alamos, New ...
متن کاملAtomic pillar-based nanoprecipitates strengthen AlMgSi alloys.
Atomic-resolution electron microscopy reveals that pillarlike silicon double columns exist in the hardening nanoprecipitates of AlMgSi alloys, which vary in structure and composition. Upon annealing, the Si2 pillars provide the skeleton for the nanoparticles to evolve in composition, structure, and morphology. We show that they begin as tiny nuclei with a composition close to Mg2Si2Al7 and a mi...
متن کاملCreep Behavior of Al-Si Die-Cast Alloys
Commercial, aluminum die-cast alloys are subject to long-term stresses leading to viscoelastic material responses resulting in inefficient engine operation and failure. Constant load creep tests were conducted on aluminum die-casting alloys: B-390, eutectic Al-Si and a 17% Si-Al alloys. Rupture occurred in the primary creep regime, with the eutectic alloy having the longest times to failure. Pr...
متن کاملScandium-Enriched Nanoprecipitates in Aluminum Providing Enhanced Coarsening and Creep Resistance
The development of high temperature aluminum alloys able to operate up to 400 oC is crucial to replace steel and titanium and decrease the mass of vehicles in the automotive and aerospace industries. This review relates the past two decades of aluminum alloy engineering done at Northwestern University focusing on developing coherent L12 Al3M nanoprecipitates strengthened aluminum alloys that ar...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Materials Research Letters
سال: 2018
ISSN: 2166-3831
DOI: 10.1080/21663831.2018.1546773