MIT: Independent Activities Period: IAP

IAP 2017 Activities by Sponsor - Charles M. Settens



Quantitative Texture Analysis Workshop

Charles Settens, Research Specialist, X-ray Diffraction and Scattering

Enrollment: Limited: Advance sign-up required
Sign-up by 01/13
Limited to 10 participants
Attendance: Participants must attend all sessions
Prereq: None

The course covers the basics of crystallographic preferred orientation (texture) and emphasizes use of quantitative tools for texture data acquisition & analysis such as grain orientation distribution calculations from X-ray pole figure data.

The lecture establishes the basics of X-ray pole figure data collection, explains and clarifies the rotations/orientations in both crystal and sample reference frames, introduces the concept of the stereographic projection for pole figure representation and describes the effects of symmetry in on pole figure representations.  Examples for rolled metals such as cube, brass, copper, and S component textures are identified to interpret microstructure-property relationships.

For the experiment, the group travels to the DMSE Metals Lab to roll bulk metals, affix them to the texture goniometer of a Bruker D8 GADDS X-ray diffractometer and perform an X-ray pole figure measurement. The PF measurement is performed overnight for optimum data collection.

The quantitative texture data analysis workshop is a tutorial for gaining practical skills for normalizing, processing and interpreting X-ray pole figures. The goal is to use X-ray pole figures to obtain a grain orientation distribution and calculate the volume fraction of textured crystallites. The workshop uses the MATLAB toolbox package MTEX (http://mtex-toolbox.github.io/). Please download MATLAB and Mtex prior to workshop.

 

 

Contact: Charles Settens, 13-4009A, SETTENS@MIT.EDU


Lecture: Introduction to Texture

Jan/24 Tue 10:00AM-12:00PM 13-4041

The lecture establishes the basics of X-ray pole figure data collection, explains and clarifies the rotations/orientations in both crystal and sample reference frames, introduces the concept of the stereographic projection for pole figure representation and describes the effects of symmetry in on pole figure representations. 

Charles Settens - Research Specialist, X-ray Diffraction and Scattering


Experiment: Roll Metal X-ray Pole Figure

Jan/24 Tue 01:30PM-04:30PM 13-4027

For the experiment, the group travels to the DMSE Metals Lab to roll bulk metals, affix them to the texture goniometer of a Bruker D8 GADDS X-ray diffractometer and perform an X-ray pole figure measurement. The PF measurement is performed overnight for optimum data collection.

Charles Settens - Research Specialist, X-ray Diffraction and Scattering


Quantitative Texture Analysis Workshop

Jan/25 Wed 10:00AM-01:00PM 13-4041

The quantitative texture data analysis workshop is a tutorial for gaining practical skills for normalizing, processing and interpreting X-ray pole figures. The workshop uses the MATLAB toolbox package MTEX (http://mtex-toolbox.github.io/). Please download prior to workshop.

Charles Settens - Research Specialist, X-ray Diffraction and Scattering