Precipitation in an A356 foundry alloy with Cu additions - A transmission electron microscopy study
نویسندگان
چکیده
منابع مشابه
The Effect of Cu Additions on the Precipitation Kinetics in an Al-Mg-Si Alloy with Excess Si
The microstructural evolution during age hardening of a Cu-bearing Al-Mg-Si alloy has been investigated by the three-dimensional atom probe (3DAP) and transmission electron microscope (TEM) techniques, in order to clarify the effect of Cu on the initial age-hardening response. After 30 minutes of artificial aging at 175 8C, the alloy shows a significant increase in hardness. The TEM observation...
متن کاملDsc Study of Precipitation in an Al-mg-mn Alloy Microalloyed with Cu
Power compensation DSC has been employed to detect and analyse precipitation reactions in an Al1.3Mg-0.4Mn and an Al-1.3Mg-0.4Mn-0.07Cu alloy in which very small amounts of precipitate, less than 0.3 at%, are expected to form. Due to the very small heat effects, baseline instability and drift significantly interfere with the measurements. After repeated experiments and careful baseline correcti...
متن کاملElectron Microscopy Study of Stress - induced Acicular γ ' Martensite in Cu - Al - Ni Alloy
spear-like martensite thermally formed in the same alloy in several respects such as in shape, lattice invariant shear, habit plane and orientation relationship, even though both have the same crystal structure and lattice parameters. The lattice invariant strain of the martensite was found to be stacking faults on the basal plane, and a defectless region was observed at the middle of the marte...
متن کاملStructural Changes of Precipitates in an Mg-5 at%Gd Alloy Studied by Transmission Electron Microscopy
Structural changes of precipitates in an Mg-5 at%Gd (Mg95Gd5) alloy by aging at 200 C and 250 C have been studied by ordinary highresolution transmission electron microscopy (HRTEM) and high-angle annular detector dark-field scanning transmission electron microscopy (HAADF-STEM). In the early stage of precipitation by aging at 200 C up to 5 h, a short-range ordered structure exists in Gd-enrich...
متن کاملPorosity Prediction in Aluminum A356 Alloy Castings
A comprehensive methodology that takes into account alloy solidification, shrinkage-driven interdendritic fluid flow, hydrogen precipitation, and porosity evolution has been developed for the prediction of microporosity fraction in aluminum A356 alloy castings. The mathematical models presented are implemented in a computational framework consistent with those of commercial casting codes, allow...
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: Journal of Alloys and Compounds
سال: 2019
ISSN: 0925-8388
DOI: 10.1016/j.jallcom.2019.01.229