In this work, X-ray and neutron powder diffraction experiments and complementary solid-state NMR spectroscopy are used to characterise NaNbO₃-based perovskite phases. Samples of NaNbO₃, KₓNa₁₋ₓNbO₃ and LiₓNa₁₋ₓNbO₃ are synthesised using a variety of techniques and subsequently c…
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Multi-pass fusion welding by a filler wire (welding electrode) is normally carried out to join thick steel sections used in most engineering applications. Welded joints in an installation, is the area of critical importance, since they are likely to contain a higher density of d…
In this work the method of isotopic substitution in neutron diffraction is used to measure the partial structure factors of several binary systems. Molten sodium chloride at 820(5) °C is investigated and an improvement is made on the previously available data. The applicability …
The structure of molten Au0.81Si0.19, Au0.72Ge0.28 and Ag0.74Ge0.26 alloys with a composition at or near to the eutectic was investigated by using neutron diffraction (ND). The results suggest that the Au-Au distance in the alloys is similar to that of liquid Au, there is a pref…
Two methods for solving the magnetic structure of a given compound are developed and applied. One is based on the second-order-phase-transitions theory of Landau and Lifshitz, and the second is based on the geometrical symmetry of the compound. The experimental method supporting…
Al-Cu alloys have long been a subject of study due to their long history, high strength, and ease of manufacture. However, advanced characterization techniques have shown that the deformation mechanisms and precipitate-dislocation interactions are still not understood perfectly.…
Additively manufacturing metal parts through laser powder bed fusion (LPBF) is of growing interest to many welds, ranging from medical to aerospace. Typical LPBF systems use a single laser to weld the metal powder, which leads to sharp temperature gradients as metal rapidly melt…
Development and characterization of Shape Memory alloys (SMAs) has taken big steps over half a century in understanding the role of alloying components, processing of alloys and microstructural optimization to real life engineering application. This has aided in the growth of ap…