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6,161 Matching Results
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Deformation Micro-mechanisms of Simple and Complex Concentrated FCC Alloys
The principal objective of this work was to elucidate the effect of microstructural features on the intrinsic dislocation mechanisms in two FCC alloys. First alloy Al0.1CoCrFeNi was from a new class of material known as complex concentrated alloys, particularly high entropy alloys (HEA). The second was a conventional Al-Mg-Sc alloy in ultrafine-grained (UFG) condition. In the case of HEA, the lattice possess significant lattice strain due to the atomic size variation and cohesive energy differences. Moreover, both the lattice friction stress and the Peierls barrier height are significantly larger than the conventional FCC metals and alloys. The experimental evidences, so far, provide a distinctive identity to the nature and motion of dislocations in FCC HEA as compared to the conventional FCC metals and alloys. Hence, the thermally activated dislocation mechanisms and kinetics in HEA has been studied in detail. To achieve the aim of examining the dislocation kinetics, transient tests, both strain rate jump tests and stress relaxation tests, were conducted. Anomalous behavior in dislocation kinetics was observed. Surprisingly, a large rate sensitivity of the flow stress and low activation volume of dislocations were observed, which are unparalleled as compared to conventional CG FCC metals and alloys. The observed trend …
Date:
December 2015
Creator:
Komarasamy, Mageshwari
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Synergistic Effects of Lattice Instability and Chemical Ordering on FCC Based Complex Concentrated Alloys
The current work investigates how the interactions among constituent elements in high entropy alloys or complex concentrated alloys (HEA/CCAs) can lead to lattice instability and local chemical ordering which in turn affects the microstructure and properties of these alloys. Using binary enthalpies of mixing, the degree of ordering in concentrated multi-component solid solutions was successfully tailored by introducing Cr, Al and Ti in a CoFeNi HEA/CCA. CoFeNi was selected as the base alloy to achieve a close to random solid solution as indicated by the near-zero binary enthalpies in CoFeNi alloy system. The room temperature tensile properties of these alloys with varied degree of ordering follow a consistent trend where yield stress increased with degree of ordering. This novel approach provides a new alloy design strategy to obtain controlled ordering tendencies and consequently targeted mechanical properties. Further studies on specific alloys have been conducted to utilize this ordering tendency in attaining precipitation strengthening. For this purpose, Al, Ti and Ni were selected to promote ordering and Co, Fe, and Cr were chosen to strengthen the solid solution matrix. In Al0.25CoFeNi HEA/CCA, the ordering tendency between Al and Ni results in a competition between two long-range ordered phases, L12 and B2. …
Date:
August 2021
Creator:
Dasari, Sriswaroop
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Reverend Carl D. McIntire v. the Fairness Doctrine
This study explored the development of the Federal Communications Commission's Fairness Doctrine policy from its beginnings in the 1920's until the FCC eliminated most of its requirements in 1987. The chapters discuss the Reverend Carl D. McIntire's battle with the FCC concerning the policy's impact on free speech in broadcasting. McIntire lost his battle with the FCC and became the first broadcaster to lose his license for Fairness Doctrine violations. The problem in this study focused on the difficulty of reconciling government regulation of broadcasting with the rights of licensees to speak freely and be heard by their listeners. The study concluded that today the FCC advocates First Amendment protection for broadcasters but it remains questionable whether present policy will continue.
Date:
May 1989
Creator:
Townsend, Larry A. (Larry Allan)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Prelude to Red Lion: History and Analysis of the Proposed Red Lion et al., v. FCC and Democratic National Committee Challenge of the Fairness Doctrine
This study sets forth events surrounding a law suit filed by Red Lion Broadcasting Co. against the Federal Communications Commission and the Democratic National Committee in 1965. The study found these events were major factors in the decision by John M. Norris, president and owner of Red Lion, to pursue his objection to the FCC's Fairness Doctrine to the U.S. Supreme Court, resulting in the court's landmark decision in Red Lion vs. FCC (1969). Research methodology combined techniques of historical research and case study. On-site research of company records, personal letters and records are included as primary sources.
Date:
May 1980
Creator:
Sauls, Samuel J.|q(Samuel Joseph)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Penny Record (Bridge City, Tex.), Vol. 35, No. 46, Ed. 1 Wednesday, March 30, 1994
Weekly newspaper from Bridge City, Texas that includes local, state, and national news along with advertising.
Date:
March 30, 1994
Creator:
Turkel, Arlene
Object Type:
Newspaper
System:
The Portal to Texas History
The Penny Record (Bridge City, Tex.), Vol. 39, No. 38, Ed. 1 Wednesday, January 14, 1998
Weekly newspaper from Bridge City, Texas that includes local, state, and national news along with advertising.
Date:
January 14, 1998
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Penny Record (Bridge City, Tex.), Vol. 34, No. 33, Ed. 1 Tuesday, January 5, 1993
Weekly newspaper from Bridge City, Texas that includes local, state, and national news along with advertising.
Date:
January 5, 1993
Creator:
Williams, Thelma
Object Type:
Newspaper
System:
The Portal to Texas History
The Penny Record (Bridge City, Tex.), Vol. 37, No. 4, Ed. 1 Wednesday, May 3, 1995
Weekly newspaper from Bridge City, Texas that includes local, state, and national news along with advertising.
Date:
May 3, 1995
Creator:
Tournear, Charlotte
Object Type:
Newspaper
System:
The Portal to Texas History
The Penny Record (Bridge City, Tex.), Vol. 32, No. 47, Ed. 1 Tuesday, April 2, 1991
Weekly newspaper from Bridge City, Texas that includes local, state, and national news along with advertising.
Date:
April 2, 1991
Creator:
Taft, Thelma
Object Type:
Newspaper
System:
The Portal to Texas History
The Penny Record (Bridge City, Tex.), Vol. 38, No. 30, Ed. 1 Wednesday, November 27, 1996
Weekly newspaper from Bridge City, Texas that includes local, state, and national news along with advertising.
Date:
November 27, 1996
Creator:
Turkel, Arlene
Object Type:
Newspaper
System:
The Portal to Texas History
The Penny Record (Bridge City, Tex.), Vol. 32, No. 49, Ed. 1 Tuesday, April 16, 1991
Weekly newspaper from Bridge City, Texas that includes local, state, and national news along with advertising.
Date:
April 16, 1991
Creator:
Taft, Thelma
Object Type:
Newspaper
System:
The Portal to Texas History
The Penny Record (Bridge City, Tex.), Vol. 32, No. 48, Ed. 1 Tuesday, April 9, 1991
Weekly newspaper from Bridge City, Texas that includes local, state, and national news along with advertising.
Date:
April 9, 1991
Creator:
Taft, Thelma
Object Type:
Newspaper
System:
The Portal to Texas History
The Kingsville Record (Kingsville, Tex.), Vol. 8, No. 41, Ed. 1 Friday, June 25, 1915
Weekly newspaper from Kingsville, Texas that includes local, state, and national news along with advertising.
Date:
June 25, 1915
Creator:
Mecklin, R. C.
Object Type:
Newspaper
System:
The Portal to Texas History
The Kingsville Record (Kingsville, Tex.), Vol. 18, No. 51, Ed. 1 Wednesday, August 12, 1925
Weekly newspaper from Kingsville, Texas that includes local, state, and national news along with advertising.
Date:
August 12, 1925
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Kingsville Record (Kingsville, Tex.), Vol. 29, No. 25, Ed. 1 Wednesday, January 30, 1935
Weekly newspaper from Kingsville, Texas that includes local, state, and national news along with advertising.
Date:
January 30, 1935
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Kingsville Record (Kingsville, Tex.), Vol. 27, No. 18, Ed. 1 Wednesday, December 14, 1932
Weekly newspaper from Kingsville, Texas that includes local, state, and national news along with advertising.
Date:
December 14, 1932
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Kingsville Record (Kingsville, Tex.), Vol. 28, No. 30, Ed. 1 Wednesday, March 7, 1934
Weekly newspaper from Kingsville, Texas that includes local, state, and national news along with advertising.
Date:
March 7, 1934
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Kingsville Record (Kingsville, Tex.), Vol. 19, No. 13, Ed. 1 Wednesday, November 18, 1925
Weekly newspaper from Kingsville, Texas that includes local, state, and national news along with advertising.
Date:
November 18, 1925
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Kingsville Record (Kingsville, Tex.), Vol. 27, No. 14, Ed. 1 Wednesday, November 16, 1932
Weekly newspaper from Kingsville, Texas that includes local, state, and national news along with advertising.
Date:
November 16, 1932
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Denton Record-Chronicle (Denton, Tex.), Vol. 114, No. 135, Ed. 1 Friday, December 15, 2017
Daily newspaper from Denton, Texas that includes local, state, and national news along with advertising.
Date:
December 15, 2017
Creator:
Parks, Scott K.
Object Type:
Newspaper
System:
The Portal to Texas History
Kingsville Record (Kingsville, Tex.), Vol. 23, No. 18, Ed. 1 Wednesday, December 17, 1930
Weekly newspaper from Kingsville, Texas that includes local, state, and national news along with advertising.
Date:
December 17, 1930
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Kingsville Record (Kingsville, Tex.), Vol. 26, No. 9, Ed. 1 Wednesday, October 14, 1931
Weekly newspaper from Kingsville, Texas that includes local, state, and national news along with advertising.
Date:
October 14, 1931
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Denton Record-Chronicle (Denton, Tex.), Vol. 114, No. 131, Ed. 1 Monday, December 11, 2017
Daily newspaper from Denton, Texas that includes local, state, and national news along with advertising.
Date:
December 11, 2017
Creator:
Parks, Scott K.
Object Type:
Newspaper
System:
The Portal to Texas History
Denton Record-Chronicle (Denton, Tex.), Vol. 114, No. 139, Ed. 1 Tuesday, December 19, 2017
Daily newspaper from Denton, Texas that includes local, state, and national news along with advertising.
Date:
December 19, 2017
Creator:
Parks, Scott K.
Object Type:
Newspaper
System:
The Portal to Texas History