Title

Comparison of Different Sample Preparation Techniques in TEM Observation of Microstructure of INCONEL Alloy 783 Subjected to Prolonged Isothermal Exposure

Document Type

Article

Publication Date

6-2004

Publication Title

Micron

Publisher

Elsevier

Volume

35

Issue

4

First page number:

273

Last page number:

279

Abstract

INCONEL alloy 783 was annealed and aged following the standard heat treatment procedure. One set of specimens was then isothermally exposed at 500 °C for 3000 h. Mechanical properties were measured at room temperature and 650 °C, and the results showed the prolonged exposure increased the strength and decreased elongation of alloy 783. The microstructures of as-produced and exposed material were examined using optical microscope, SEM and TEM, respectively. Three techniques, jet electro-polishing, ion milling, and focused ion beam, were employed to prepare the TEM samples to observe the variation of microstructure of alloy 783 due to isothermal exposure. TEM images of samples prepared by different methods were analyzed and compared. The results indicate that the jet electro-polishing technique allows the detail microstructure of alloy 783 subjected to different treatments to be well revealed, and thereby the TEM images can be used to explain the enhancement of strength of alloy 783 caused by isothermal exposure.

Keywords

Alloy 783; Alloys – Effect of high temperatures on; Alloys – Microstructure; Focused ion beams (FIB); Ion milling; Jet electro-polishing; Microscopy – Technique; Transmission electron microscopes

Disciplines

Materials Science and Engineering | Mechanical Engineering | Metallurgy

Language

English

Permissions

Use Find in Your Library, contact the author, or use interlibrary loan to garner a copy of the article. Publisher copyright policy allows author to archive post-print (author’s final manuscript). When post-print is available or publisher policy changes, the article will be deposited

Identifier

DOI: http://dx.doi.org/10.1016/j.micron.2003.10.048

Publisher Citation

Longzhou Ma, Comparison of different sample preparation techniques in TEM observation of microstructure of INCONEL alloy 783 subjected to prolonged isothermal exposure, Micron, Volume 35, Issue 4, June 2004, Pages 273-279, ISSN 0968-4328, 10.1016/j.micron.2003.10.048. (http://www.sciencedirect.com/science/article/pii/S0968432803001793)