Applying Multivariate Statistical Analysis to Atom Probe Tomography

نویسنده

  • C. M. Parish
چکیده

Atom probe tomography (APT) is a powerful method for studying the microstructure and chemistry of materials at the unit-cell level [1]. Because APT produces datasets containing up to billions of atom identities, new methods of analysis are being developed to rapidly datamine information from the APT data. Spectrum imaging (SI) methods utilizing multivariate statistical analysis (MVSA) are becoming standard for acquiring and interpreting analytical electron microscopy (AEM) data [2-4]. Here, the hypothesis that SI techniques can elucidate APT data is explored.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Multivariate Statistical Analysis of Atom Probe Tomography Data

Multivariate statistical analysis (MVSA) methods have been shown to yield many advantages in analytical instrumentation techniques because they offer an objective means to find complex information correlations in data that are not obvious to an observer and they maximize the discrimination of low-level signals from noise. Because they are objective in nature, the methods hold promise for automa...

متن کامل

Multivariate statistical analysis of atom probe tomography data.

The application of spectrum imaging multivariate statistical analysis methods, specifically principal component analysis (PCA), to atom probe tomography (APT) data has been investigated. The mathematical method of analysis is described and the results for two example datasets are analyzed and presented. The first dataset is from the analysis of a PM 2000 Fe-Cr-Al-Ti steel containing two differe...

متن کامل

Challenges and Opportunities in the Multivariate Analysis of 3-D Spectral Images

Multivariate statistical methods have long proven powerful for extracting chemical information from spectroscopic images. The premise underlying this application of multivariate techniques is that the observed spectrum at any point can be described as an additive linear mixture of a limited number of base spectra or “pure components”. Recent interest has focused on applying these methods to dat...

متن کامل

Atom Probe Tomography Investigations of Modi ed Early Stage Clustering in Si-Containing Aluminum Alloys

In this paper atom probe tomography is used to explore early stage clustering in aluminum alloys. Two novel concepts for a modi cation of clustering are discussed. Control of early stage clustering is welcome from an application point of view since clustering deteriorates strength evolution during the industrial heat treatment of the important class of Al Mg Si precipitation-hardenable alloys. ...

متن کامل

Advanced Nanostructural Analysis of Aluminium Alloys Using Atom Probe Tomography

This paper sets out the needs for and recent advances in microscopy in Al alloys, using solutesolute and solute-vacancy clustering as examples. Cluster-assisted nucleation and cluster strengthening are discussed and this is followed by a discussion of the local electrode atom probe. Heuristic and algorithmic tools for assessing the nanoscale microstructure or nanostructure of Al alloys acquired...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2010