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THE HEAT TREATMENT OF PLUTONIUM
Two groups of plutonium bars, one group containing 165 ppm iron and the other 678 ppm iron were end-quenched from the beta, gamma, delta, delta-prime, and epsilon phases. In general, cooling rate was found to have three striking effects on microstructure. The alpha grain size was found to decrease with increasing cooling rate during cooling from all phases. Upon cooling high-iron plutonium from the epsilon phase, the size of the Pu--Pu6/sub 6/Fe eutectic network decreased with increasing cooling rate. Cooling high-iron plutonium from temperatures between 413 and 460 deg C produced a wide variety of Pu --Pu/sub 6/ Fe configurations in the microstructure. Finally, the size of an unidentified spheroidal inclusion, soluble in the delta and higher temperature phases, decreased as cooling rate increased across the delta to gamma transformation. These effects of cooling rate can be used to indicate the cooling rate or thermal history that a particular plutonium specimen has encountered. A linear relationship between the alpha grain size and the Pu--Pu/sub 6/Fe eutectic network size was observed. The network size was roughly two times larger than the alpha grain size. Hardness traverses on each of the bars indlcated no apparent effect of coollng rate during quenchlng on …
Date:
February 1, 1961
Creator:
Gardner, H.R.
Object Type:
Report
System:
The UNT Digital Library
The Radiochemistry of the Rare Earths, Scandium, Yttrium, and Actinium
None
Date:
February 1, 1961
Creator:
Stevenson, P. C. & Nervik, W. E.
Object Type:
Report
System:
The UNT Digital Library
Convairiety, Volume 14, Number 3, Wednesday, February 1, 1961
Bimonthly newsletter published for employees of the Convair Division in Fort Worth containing work-related information, updates about employees, and other news.
Date:
February 1, 1961
Creator:
General Dynamics Corporation. Convair Division.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
The Ponca City News (Ponca, Okla.), Vol. 68, No. 106, Ed. 1 Wednesday, February 1, 1961
Daily newspaper from Ponca City, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 1, 1961
Creator:
Muchmore, Gareth Bruce
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Abilene Reporter-News (Abilene, Tex.), Vol. 80, No. 227, Ed. 1 Wednesday, February 1, 1961
Daily newspaper from Abilene, Texas that includes local, state, and national news along with advertising.
Date:
February 1, 1961
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Blackwell Journal-Tribune (Blackwell, Okla.), Vol. 67, No. 36, Ed. 1 Wednesday, February 1, 1961
Daily newspaper from Blackwell, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 1, 1961
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oklahoma City Times (Oklahoma City, Okla.), Vol. 71, No. 307, Ed. 1 Wednesday, February 1, 1961
Daily newspaper from Oklahoma City, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 1, 1961
Creator:
Gaylord, E. K.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History