Masters Theses
Abstract
"Abrasive wear testing of lightweight, austenitic Fe-Mn-AI-C cast steel has been performed in accordance with ASTM G65 using a dry sand, rubber wheel, abrasion testing apparatus. Testing was conducted on a series of Fe-30Mn-XAI-YC-1Si-0.5Mo chemistries containing aluminum levels from 2.9 to 9.5 wt.% and carbon levels from 0.9 to 1.83 wt.%. Solution treated materials having an austenitic microstructure produced the highest wear resistance. Wear resistance decreased with higher aluminum, lower carbon, and higher hardness after age hardening. In the solution treated condition the wear rate was a strong function of the aluminum to carbon ratio and the wear rate increased with a parabolic dependence on the AI/C ratio, which ranged from 1.8 to 10.2. Examination of the surface wear scar revealed a mechanism of plowing during abrasion testing and this method of material removal is sensitive to work hardening rate. Work hardening behavior was determined from tensile tests and also decreased with increasing AI/C ratio and after aging hardening. The loss of wear resistance is related to short range ordering of AI and C in the solution treated materials and K-carbide precipitation in age hardened materials and both contribute to planar slip and lower work hardening rates. A high carbon tool steel (W1) and a bainitic low alloy steel (SAE 8620) were also tested for comparison. A lightweight steel containing 6.5 wt.% AI and 1.2 wt.% C has wear resistance comparable to within 5% of the bainitic SAE 8620 steel forging currently used for the Bradley Fighting Vehicle track shoe and this cast Fe-Mn-AIC steel, at equivalent tensile properties, would be 10% lighter"--Abstract, page iii.
Advisor(s)
Van Aken, David C.
Committee Member(s)
Richards, Von
Peaslee, Kent D., 1956-2013
Department(s)
Materials Science and Engineering
Degree Name
M.S. in Metallurgical Engineering
Publisher
Missouri University of Science and Technology
Publication Date
Spring 2013
Pagination
x, 122 pages
Note about bibliography
Includes bibliographical references (pages 118-121).
Rights
© 2013 Samuel August Buckholz, All rights reserved.
Document Type
Thesis - Restricted Access
File Type
text
Language
English
Subject Headings
Austenitic steel -- Abrasion resistance -- Testing
Manganese steel -- Abrasion resistance
Aluminum alloys
Carbon composites
Microstructure -- Testing
Hardness -- Testing
Thesis Number
T 10324
Print OCLC #
860992744
Electronic OCLC #
908574551
Link to Catalog Record
Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.
http://merlin.lib.umsystem.edu:80/record=b10115818~S5Recommended Citation
Buckholz, Samuel August, "The influence of aluminum and carbon on the abrasion resistance of high manganese steels" (2013). Masters Theses. 4471.
https://scholarsmine.mst.edu/masters_theses/4471
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