-
Article
Open AccessIn situ observation and reduction of hot-cracks in laser additive manufacturing
Cracking during Laser Additive Manufacturing is a problem for many higher-strength aluminium alloys, including AA6061. Here, we used a pulsed laser with ramp-down power modulation to improve the cracking resis...
-
Article
Open AccessOptimising the manufacturing of a β-Ti alloy produced via direct energy deposition using small dataset machine learning
Successful additive manufacturing involves the optimisation of numerous process parameters that significantly influence product quality and manufacturing success. One commonly used criteria based on a collecti...
-
Article
Open AccessEffects of Laser Surface Remelting on Microstructure and Corrosion Properties of Mg-12Dy-1.1Ni Alloy
Effects of laser surface remelting (LSR) on microstructure and corrosion properties of as-cast Mg-12Dy-1.1Ni (wt.%) alloy were investigated. The as-cast alloy was mainly composed of α-Mg, lamellar Mg12DyNi phase ...
-
Article
Grain Refinement of Alloys in Fusion-Based Additive Manufacturing Processes
One of the less desirable aspects of fusion-based additive manufacturing is the propensity for coarse columnar grain structures crossing build layers to form. This paper initially attempts to explain the reaso...
-
Article
Author Correction: Additive manufacturing of ultrafine-grained high-strength titanium alloys
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
-
Article
Additive manufacturing of ultrafine-grained high-strength titanium alloys
Additive manufacturing, often known as three-dimensional (3D) printing, is a process in which a part is built layer-by-layer and is a promising approach for creating components close to their final (net) shape...
-
Article
Refining As-cast β-Ti Grains Through ZrN Inoculation
The columnar-to-equiaxed transition and remarkable refinement of β-Ti grains occur in an as-cast Ti-13Mo alloy when a new grain refiner, ZrN, was inoculated at a nitrogen level as low as 0.4 wt pct. The grain ref...
-
Article
Open AccessDifferential Scanning Calorimetry (DSC) and Thermodynamic Prediction of Liquid Fraction vs Temperature for Two High-Performance Alloys for Semi-Solid Processing (Al-Si-Cu-Mg (319s) and Al-Cu-Ag (201))
There is a need to extend the application of semi-solid processing (SSP) to higher performance alloys such as 319s (Al-Si-Cu-Mg) and 201 (Al-Cu-Ag). The melting of these two alloys was investigated using diffe...
-
Article
What is the Process Window for Semi-solid Processing?
In semi-solid processing, the liquid fraction vs temperature is commonly used to define the process window. Conventionally, it is assumed that a freezing range is required for semi-solid processing but recently b...
