ultrasonic applications/ grain structuremetalsstructural qualityUS nondestructive testing/ B7820 Sonic and ultrasonic applicationsThere is a need for a non-destructive system to test the structural quality of polycrystalline materials, especially metals. An ultrasonic technique is one means of doing this ...
Terms of use to Metals to Fundamentals of metals Grain structureDr. Dmitri Kopeliovich Grain is a small region of a metal, having a given and continuous crystal lattice orientation. Each grain represents small single crystal. Grains form as a result of solidification or other phase transformat...
Additive manufacturing (AM) of metals, also known as metal 3D printing, typically leads to the formation of columnar grain structures along the build direction in most as-built metals and alloys. These long columnar grains can cause property anisotropy, which is usually detrimental to component qua...
This work describes a Dynamic Kinetic Monte Carlo numerical modeling framework that can predict the microstructure of metals duringpowder bed fusion(PBF) anddirected energy deposition(DED)additive manufacturing(AM) while considering significant variations in thermal history and heat accumulation that occur ...
As a first step in analyzing such relationships, we present a polyhedral unit model to classify the geometrical nature of atomic packing along grain boundaries. While the atomic structure in disordered systems has been a topic of interest for many decades, geometrical analyses of grain boundaries ...
J-P. RiquetTaylor & FrancisCast MetalsDesnain, P., D. Bloch, F. Durand, J.-L. Meyer, J.-P. Riquet: Effect of composition and stirring on the grain structure of aluminium alloys solidified in ingots. Cast Metals, 5 (1992), 78–86...
Σ3 grain boundaries form as a result of either growth twinning or deformation twinning in face centered cubic (fcc) metals and play a crucial role in determining the mechanical and electrical properties and microstructural stability. We studied the structure and stability of Σ3 grain boundaries (...
State Key Laboratory of Advanced Processing and Recycling of Non-ferrous MetalsXijing WangState Key Laboratory of Advanced Processing and Recycling of Non-ferrous MetalsXueling WeiState Key Laboratory of Advanced Processing and Recycling of Non-ferrous MetalsJournal of Wuhan University of Technology(...
The strain gradient constitutive model effectively simulates the mechanical response of metal matrix composites (MMCs) [17]. Zhu et al. [18] developed a theoretical model to characterize the mechanical properties of nanostructured metals with BGS grain size distribution, successfully predicting their ...
A grain boundary (GB) is the interface between two grains, or crystallites, in a polycrystalline material. Grain boundaries are defects in the crystal structure, and tend to decrease the electrical and thermal conductivity of the material. ...