Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 6 of 6 for “"Fine grain structure"”.
-
Development of Niobium Boron grain retainer for aluminium silicon alloys
Aluminium castings with a large grain structure have poor mechanical properties which are primarily due to casting defects as opposed to fine grain structure. The grain refinement practice using chemical addition is well established for wrought alloys, however in the case of casting alloys, the …
-
Low and Structure at Constant Temperature in a Superplastic Fe-Al-Mn-C Alloy.
Micrograin superplasticity is that property of some metals to elongate many times their original lengths during deformation at elevated temperatures. Micrograin superplasticity is exhibited during deformation at constant temperature by metals having a fine grain structure and is to be distinguished …
-
Residual stress in nanocrystalline nickel tungsten electrodeposits
… poses several unique challenges due to their fine grain structure, thickness distribution, and matte surface. We employ a three-dimensional profilometry-based approach that addresses each of these complicating factors and enables quantitative analysis of residual stress with reasonable …
-
Friction stir welding of high temperature alloys
… and correlation between processing, microstructure and mechanical properties. Tool performance study was carried out for Ti-6Al-4V alloy with refractory tools made of W-1.1%La₂O₃ and two different grades of WC-Co based materials. The results showed that tool degradation can be attributed …
-
Laser Powder Bed Fusion Additive Manufacturing of Fe-based Shape Memory Alloys for Biomedical Applications
… The relationship between process-induced microstructure and accelerated degradation rates in simulated physiological conditions is carefully explored by evaluating the formation and characteristics of corrosion products. The in-situ alloying of mixed elemental powder creates a heterogeneous …
-
The characteristics of Titanium-nickel alloys produced by powder technology
… samples or the production of a supersaturated structure in water quenched material.<br></br><br></br>The pressed and sintered specimens display a well defined shape memory behaviour. The extent of shape recovery observed, following deformation and heating through the reverse transformation …