Doctoral Dissertations

Author

Wenzhong Luo

Abstract

"To understand the high-temperature thermodynamics of the iron-carbon-zinc system, the solubilities of zinc in iron/iron-carbon alloys have been measured by equilibrating zinc vapor with iron/iron-carbon samples, in the temperature range of 1473 K to 1873 K. The carbon composition was varied from 0 to 4.6 wt.%. The calculated zinc activities deviated positively from ideality. Zinc obeys Henrian behavior in liquid iron/iron-carbon alloys at PZn ≤ 1 atm. Generally, the solubility of zinc decreased with increasing temperature and carbon content. Based on experimental data, thermodynamic modeling of the iron-carbon-zinc system was performed in both liquid and solid solutions....

The equilibrium partition coefficient of zinc between the δ-ferrite and liquid regions of the iron-carbon phase diagram was calculated on the basis of the above two equations and estimated from experimental data for zinc between the austenite and liquid regions. Based on the present work, no significant segregation is expected during equilibrium solidification"--Abstract, page iii.

Advisor(s)

Schlesinger, Mark E.
Morris, Arthur E., 1935-

Committee Member(s)

Robertson, D. G. C.
Watson, John L.
Johnson, James W.

Department(s)

Materials Science and Engineering

Degree Name

Ph. D. in Metallurgical Engineering

Publisher

University of Missouri--Rolla

Publication Date

Fall 1993

Pagination

xi, 73 pages

Note about bibliography

Includes bibliographic references (pages 70-72).

Rights

© 1993 Wenzhong Luo, All rights reserved.

Document Type

Dissertation - Restricted Access

File Type

text

Language

English

Thesis Number

T 6652

Print OCLC #

31066836

Electronic OCLC #

1089929292

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://laurel.lso.missouri.edu/record=b2549817~S5

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