About
22
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Introduction
A physical metallurgist with interests in analysis, instrumentation and testing.
Education
May 2012 - January 2018
Publications
Publications (22)
![Figure 1: Adapted from [7, Fig. 3-4]. Common parameters in diffraction...](profile/Jessica-Hiscocks/publication/321025036/figure/fig6/AS:668810193412099@1536468184244/Adapted-from-7-Fig-3-4-Common-parameters-in-diffraction-experiments-shown_Q320.jpg)
![Figure 2: Redrawn based on [7, Fig. 3-12]. Schematic of Debye-Scherrer...](profile/Jessica-Hiscocks/publication/321025036/figure/fig7/AS:668810197626881@1536468185124/Redrawn-based-on-7-Fig-3-12-Schematic-of-Debye-Scherrer-diffracted-cones-from-a_Q320.jpg)
An introduction to the use of diffraction in measurement, using a geometric approach (rather than mathematical) which some readers may find allows for a more intuitive understanding of the experimental geometry. The purpose of this work is to give the user the ability to understand the connections between the diffraction patterns observed and the u...
Dissimilar butted combinations of magnesium alloys AZ31, AZ61 and AZ80 were friction stir welded and transverse tensile tested until failure. Strain mapping across the deforming weld nugget and interfaces was carried out to correlate the deformation to the local microstructures. Mechanical performance was found to be highly dependent on the spatial...
Low-angle synchrotron transmission diffraction has been used to create high-resolution 2D residual strain maps of friction stir welds made with three processing conditions. These spatial maps of residual strain reveal local concentrations not detectable by line scans, and confirm that the asymmetric material flow known to produce asymmetric tempera...
Note: Version 3.3 replaced due to waitbar bug.
MTEX lets you do EBSD data analysis in MATLAB. This app is a GUI to make it easier.
This app was designed to provide the most common EBSD map utilities (and a few for pole figures) to help a new user quickly plot maps, annotate them for presentation, and investigate their data. While you do this, you...
This manual is aimed at quickly teaching new MTEX users how to correctly do EBSD texture analysis to produce EBSD maps and pole figures. It will also provide a reference for intermediate users, and advice on verifying the accuracy of your EBSD maps. It is intended to be simple, direct, and accessible to users of all backgrounds with many examples a...
A corrosion study examined stainless steel S31600/SS316 after exposure to the liquid metal galinstan and gases including nitrogen, n-pentane, isobutane and R245fa at 150 °C under dynamic conditions for 3.5, 9.5 and 20.5 days. Ampules partly filled with galinstan and the gas were continuously stirred to create regions of gas-only, gas-liquid, and li...
Now updated to work with MTEX 5.5.2!
MTEX lets you do EBSD data analysis in MATLAB. This app is a GUI to make it easier. This app was designed to provide the most common EBSD map utilities (and a few for pole figures) to help a new user quickly plot maps, annotate them for presentation, and investigate their data.
While you do this, you can also...
MTEX is a free command-line driven crystallographic software developed by Ralf Hielscher to run on Matlab. This GUI was written by Jessica Hiscocks to simplify use of MTEX for casual users, and make free crystallographic analysis more accessible to everyone. If you would like individual help, I offer personal tutoring sessions and can write custom...
MTEX is a free command-line driven crystallographic software developed by Ralf Hielscher to run on Matlab. This GUI was written by Jessica Hiscocks to simplify use of MTEX for casual users, and make free crystallographic analysis more accessible to everyone. If you would like individual help, I offer personal tutoring sessions and can write custom...
MTEX is a free command-line driven crystallographic software developed by Ralf Hielscher to run on Matlab.
This GUI was written by Jessica Hiscocks to simplify use of MTEX for casual users, and make free crystallographic analysis more accessible to everyone.
If you would like individual help, I offer personal tutoring sessions and can write custo...
An updated version of the previous GUI, this app for Matlab allows you to plot EBSD Maps, calculate grains, and add annotations. The current version allows for plotting of pole figures, includes test data, and adds new misorientation colouring options to EBSD maps. Requires Mtex and Matlab.
Graphical user interface add-on for MTEX (Rev 0), allowing plotting and annotation of EBSD maps by phase, x-y position, or by grain size. Possible annotations include text, HCP or cubic unit cells, and data properties. Example: load EBSD data, and label all grains larger than 100 pixels with an HCP unit cell. Requires Matlab (R2016b or later), exis...
An introduction to the methods used when analysing metallic samples using low angle transmission experiments in conjunction with a 2D (area) detector. The following document was developed in work with magnesium, an HCP material and will require some adaptation to other metals. Some notes are specific to the APS in Chicago, and analysis was done mai...
A collection of scripts for analysing low angle transmission experiments in conjunction with a 2D (area) detector, using Fit2D, Fityk, Excel, and Matlab.
MTEX is a free add-on to matlab (base version, no packages required) which can be used to analyse EBSD and XRD (pole figure input) data. In comparison to the Bruker and Channel 5/ HKL software packages it has the advantage of allowing you to create any sort of map or analysis supported by your input data. You can also automate tasks, manually or wi...
Many studies of friction stir welding have shown that periodicity of metal flow around the tool pin may result in the formation of periodic differences in microstructure and texture in the weld nugget area correlated with the weld pitch. The current work investigates the periodicity of magnesium weld microtexture in the nugget region and its associ...
Synchrotron diffraction was used to construct the first 2D texture maps of entire magnesium AZ80 friction stir welds and showed that basal slip is favoured along most of the advancing side interface, and to a lesser extent on the retreating side interface. Zones of grains optimally oriented for basal slip are known to be a major contributor to stra...
Magnesium generally has limited ductility which, in the case of extruded tubes, may be further reduced at the extrusion seams. These are locations where the material flow separates and rejoins during extrusion and are unavoidable when a hollow profile product is continuously extruded. When this type of magnesium tube is stressed along the circumfer...
Research is currently being conducted on the feasibility of hydroforming extruded magnesium tubes to integrate multiple parts into a single hydroformed section. Among other applications, such sections would reduce the weight of both cars and planes, particularly when used in the vehicle frame. This would lead to either reduced fuel costs, or the ab...
Questions
Questions (2)
Hello All, I'm pleased to announce I'll be presenting at the MTEX Chemnitz virtual workshop the afternoon of March 15th 2021. My presentation, titled "Lies my EBSD system told me (and how to fix them)" will discuss the errors that can be introduced during the process of acquiring and importing an EBSD scan into MTEX. I'll also cover how to detect these errors, and how to correct your data. I hope to see you there!
Hello All, I'm beginning an extensive revision of my popular manual "Getting started with MTEX". The new version will have the same goal: to assist people who are already familiar with texture theory to analyze EBSD data using the free MTEX software for MATLAB.
I'm adding a lot of new images, clarifying explanations and hopefully making the manual easier to use, but I'd like feedback on anything you think is missing. What did you really struggle with when using the software on EBSD data?
When it's done, I'll put the new version online here first!
