Author: Lowell T. Lloyd
Publisher:
ISBN:
Category : Recrystallization (Metallurgy)
Languages : en
Pages : 52
Book Description
Recrystallization in Rolled Uranium Sheet
Author: Lowell T. Lloyd
Publisher:
ISBN:
Category : Recrystallization (Metallurgy)
Languages : en
Pages : 52
Book Description
Publisher:
ISBN:
Category : Recrystallization (Metallurgy)
Languages : en
Pages : 52
Book Description
Recrystallization in Rolled Uranium Sheet. Final Report--Metallurgy Program 4.1.5
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
X-ray diffraction measurements of uranium sheet reduced 76% in thickness at room temperature and after annealing at various temperatures indicated that as- rolled and recrystallized materials have different preferred orientations, contrary to previously reported works. The preferred orientations of samples annealed at 380 and 400 deg C were very similar, but different from that of a set of samples annealed at 450 deg C. Reannealing at 450 deg C did not change essentially the preferred orientation established by annealing at 380 deg C. Dilatometric measurements in directions parallel and normal to the rolling direction and lying in the plane of rolling did not conclusively substantiate the x-ray diffraction measurements. Recrystallization at temperatures from 360 to 450 deg C of the homogeneously deformed as-rolled structure was characterized by the formation of extremely fine grains in the early stage which later were absorbed by growth of somewhat larger grains. Evidence of ordinary secondary recrystallization was observed in specimens annealed at 600 deg C. (auth).
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
X-ray diffraction measurements of uranium sheet reduced 76% in thickness at room temperature and after annealing at various temperatures indicated that as- rolled and recrystallized materials have different preferred orientations, contrary to previously reported works. The preferred orientations of samples annealed at 380 and 400 deg C were very similar, but different from that of a set of samples annealed at 450 deg C. Reannealing at 450 deg C did not change essentially the preferred orientation established by annealing at 380 deg C. Dilatometric measurements in directions parallel and normal to the rolling direction and lying in the plane of rolling did not conclusively substantiate the x-ray diffraction measurements. Recrystallization at temperatures from 360 to 450 deg C of the homogeneously deformed as-rolled structure was characterized by the formation of extremely fine grains in the early stage which later were absorbed by growth of somewhat larger grains. Evidence of ordinary secondary recrystallization was observed in specimens annealed at 600 deg C. (auth).
Recrystallization of Heavily Cold-rolled Uranium Sheet
Author: W. R. Yario
Publisher:
ISBN:
Category : Annealing of metals
Languages : en
Pages : 46
Book Description
Changes in mean expansion coefficients upon annealing uranium sheet that had been rolled to 80% reduction in thickness at room temperature indicated that three different preferred orientations could be developed upon recrystallization. One preferred orientation, which is essentially the same as that of the as-rolled material, resulted from annealing for long times at 360 deg C or at a lower temperature; a second type was created by annealing for moderate times between 400 and 600 deg C; and the third accompanied grain coarsening at 650 deg C. The microstructures of the as-rolled and annealed specimens were extremely heterogeneous because of the large grain size present prior to final fabrication at room temperature. The as-rolled structures consisted of heavily deformed areas and smaller quantities of lightly deformed material. The annealing of the former was characterized by initial creation of very fine recrystallized grains which were absorbed later by discontinuous growth of larger grains. Lightly deformed areas, upon annealing, first exhibited recovery by polygonization and then underwent normal recrystallization.
Publisher:
ISBN:
Category : Annealing of metals
Languages : en
Pages : 46
Book Description
Changes in mean expansion coefficients upon annealing uranium sheet that had been rolled to 80% reduction in thickness at room temperature indicated that three different preferred orientations could be developed upon recrystallization. One preferred orientation, which is essentially the same as that of the as-rolled material, resulted from annealing for long times at 360 deg C or at a lower temperature; a second type was created by annealing for moderate times between 400 and 600 deg C; and the third accompanied grain coarsening at 650 deg C. The microstructures of the as-rolled and annealed specimens were extremely heterogeneous because of the large grain size present prior to final fabrication at room temperature. The as-rolled structures consisted of heavily deformed areas and smaller quantities of lightly deformed material. The annealing of the former was characterized by initial creation of very fine recrystallized grains which were absorbed later by discontinuous growth of larger grains. Lightly deformed areas, upon annealing, first exhibited recovery by polygonization and then underwent normal recrystallization.
Recrystallation in Rolled Uranium Sheet
Author: Lowell T. Lloyd
Publisher:
ISBN:
Category : Annealing of metals
Languages : en
Pages : 45
Book Description
X-ray diffraction measurements of uranium sheet reduced 76% in thickness at room temperature and after annealing at various temperatures indicated that as- rolled and recrystallized materials have different preferred orientations, contrary to previously reported works. The preferred orientations of samples annealed at 380 and 400 deg C were very similar, but different from that of a set of samples annealed at 450 deg C. Re-annealing at 450 deg C did not change essentially the preferred orientation established by annealing at 380 deg C. Dilatometric measurements in directions parallel and normal to the rolling direction and lying in the plane of rolling did not conclusively substantiate the x-ray diffraction measurements. Recrystallization at temperatures from 360 to 450 deg C of the homogeneously deformed as-rolled structure was characterized by the formation of extremely fine grains in the early stage which later were absorbed by growth of somewhat larger grains. Evidence of ordinary secondary recrystallization was observed in specimens annealed at 600 deg C.
Publisher:
ISBN:
Category : Annealing of metals
Languages : en
Pages : 45
Book Description
X-ray diffraction measurements of uranium sheet reduced 76% in thickness at room temperature and after annealing at various temperatures indicated that as- rolled and recrystallized materials have different preferred orientations, contrary to previously reported works. The preferred orientations of samples annealed at 380 and 400 deg C were very similar, but different from that of a set of samples annealed at 450 deg C. Re-annealing at 450 deg C did not change essentially the preferred orientation established by annealing at 380 deg C. Dilatometric measurements in directions parallel and normal to the rolling direction and lying in the plane of rolling did not conclusively substantiate the x-ray diffraction measurements. Recrystallization at temperatures from 360 to 450 deg C of the homogeneously deformed as-rolled structure was characterized by the formation of extremely fine grains in the early stage which later were absorbed by growth of somewhat larger grains. Evidence of ordinary secondary recrystallization was observed in specimens annealed at 600 deg C.
RECRYSTALLIZATION OF HEAVILY COLD-ROLLED URANIUM SHEET.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Changes in mean expansion coefficients upon annealing uranium sheet that had been rolled to 80% reduction in thickness at room temperature indicated that three different preferred oriontations could be developed upon recrystallization. One preferred orientation, which is essentially the same as that of the as-rolled material, resulted from annealing for long times at 360 deg C or at a lower tempcrature; a second type was created by annealing for moderate times between 400 and 600 deg C; and the third accompanied grain coarsening at 650 deg C. The microstructures of the as-rolled and annealed specimens were extremely heterogeneous because of the large grain size present prior to final fabrication at room temperature. The as-rolled structures consisted of heavily deformed areas and smaller quantities of lightly deformed material. The annealing of the former was characterized by initial creation of very fine recrystallized grains which were absorbed later by discontinuous growth of larger grains. Lightiy deformed areas, upon annealing, first exhibited recovery by polygonization and then underwent normal recrystallization. (auth).
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Changes in mean expansion coefficients upon annealing uranium sheet that had been rolled to 80% reduction in thickness at room temperature indicated that three different preferred oriontations could be developed upon recrystallization. One preferred orientation, which is essentially the same as that of the as-rolled material, resulted from annealing for long times at 360 deg C or at a lower tempcrature; a second type was created by annealing for moderate times between 400 and 600 deg C; and the third accompanied grain coarsening at 650 deg C. The microstructures of the as-rolled and annealed specimens were extremely heterogeneous because of the large grain size present prior to final fabrication at room temperature. The as-rolled structures consisted of heavily deformed areas and smaller quantities of lightly deformed material. The annealing of the former was characterized by initial creation of very fine recrystallized grains which were absorbed later by discontinuous growth of larger grains. Lightiy deformed areas, upon annealing, first exhibited recovery by polygonization and then underwent normal recrystallization. (auth).
Preferred Orientation of Cold-rolled and Recrystallized Uranium Plate
Author: William R. McDonell
Publisher:
ISBN:
Category : Recrystallization (Metallurgy)
Languages : en
Pages : 24
Book Description
Publisher:
ISBN:
Category : Recrystallization (Metallurgy)
Languages : en
Pages : 24
Book Description
Rolling of Uranium
Author:
Publisher:
ISBN:
Category : Rolling (Metal-work)
Languages : en
Pages : 222
Book Description
Publisher:
ISBN:
Category : Rolling (Metal-work)
Languages : en
Pages : 222
Book Description
Quantitative Determination of Rolling and Recrystallization Textures in 600 C- and 300 C- Rolled Uranium Rods
Quantitative Determination of Rolling and Recrystallization Textures in 600o C- and 300oC-rolled Uranium Rods
Quantitative Determination of Rolling and Recrystallization Textures in 600°C-and 300°C-rolled Uranium Rods
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 42
Book Description
The rolling and recrystallization textures in 300°C- and 600°Crolled uranium rods were investigated employing a Geiger counter spectrometer and a modification of the Schulz reflection technique. The method used minimizes the errors resulting from limitations of the Schulz technique. The rolling texture s were found to consist. of two fiber texture components, in which the (010) and the (110) planes are perpendicular to the rod axis. The r 6 lativ e amount'of the (110) texture increases with increasing rolling temperature. The reorystallization texture of a rod having mainly the(010) rolling texture consists of the (010) and the (140) fiber texture components.
Publisher:
ISBN:
Category :
Languages : en
Pages : 42
Book Description
The rolling and recrystallization textures in 300°C- and 600°Crolled uranium rods were investigated employing a Geiger counter spectrometer and a modification of the Schulz reflection technique. The method used minimizes the errors resulting from limitations of the Schulz technique. The rolling texture s were found to consist. of two fiber texture components, in which the (010) and the (110) planes are perpendicular to the rod axis. The r 6 lativ e amount'of the (110) texture increases with increasing rolling temperature. The reorystallization texture of a rod having mainly the(010) rolling texture consists of the (010) and the (140) fiber texture components.