Doctoral Dissertations

Abstract

"The cracking of low alloy Cr-Mo-V steels under cyclic stress at 1000-1100°C. was studied using a specially designed test apparatus. The results obtained from specimens plated with hard chromium are compared to those of unplated specimens. Tests conducted in gas mixtures of carbon monoxide and carbon dioxide showed that a high CO/CO2 ratio retards cracking in both plated and unplated specimens. Both external and internal oxidation are used to explain these results. Inherent microcracks in the hard chromium plating promoted cracking in all CO/CO2 environments. It was also found that these steels are severely embrittled in the presence of liquid copper."--Abstract, page iii.

Advisor(s)

O'Keefe, T. J. (Thomas J.)

Committee Member(s)

Weart, H. W. (Harry Waldron), 1927-
Frad, William A., 1909-1974
James, William Joseph
Moore, Robert E., 1930-2003

Department(s)

Materials Science and Engineering

Degree Name

Ph. D. in Metallurgical Engineering

Sponsor(s)

United States. Army Weapons Command

Comments

This research was performed as a portion of contract DAAF0l-69C-054l administered by the Science and Technology Laboratory of the U. S. Army Weapons Command, Rock Island Arsenal, Rock Island, Illinois.

Publisher

University of Missouri--Rolla

Publication Date

1972

Pagination

ix, 59 pages

Note about bibliography

Includes bibliographical references (pages 44-46).

Rights

© 1972 Robert C. Tooke, All rights reserved.

Document Type

Dissertation - Open Access

File Type

text

Language

English

Subject Headings

Steel alloys -- Fatigue
Steel alloys -- Effect of high temperatures on
Materials at high temperatures
Chromium-plating

Thesis Number

T 2812

Print OCLC #

6024886

Electronic OCLC #

904445327

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