Diffusional Creep And Creep Degradation In The Dispersion Strengthened Alloy Td Nicr
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Author |
: John Daniel Whittenberger |
Publisher |
: |
Total Pages |
: 36 |
Release |
: 1972 |
ISBN-10 |
: UIUC:30112106641761 |
ISBN-13 |
: |
Rating |
: 4/5 (61 Downloads) |
Synopsis Diffusional Creep and Creep Degradation in the Dispersion-strengthened Alloy TD-NiCr by : John Daniel Whittenberger
Dispersoid-free regions were observed in TD-NiCr (Ni-20Cr-2ThO2) after slow strain rate testing in air from 1145 to 1590 K. Formation of the dispersoid-free regions appears to be the result of diffusional creep. The net effect of this creep is the degradation of TD-NiCr to a duplex microstructure. Degradation is further enhanced by the formation of voids and integranular oxidation in the thoria-free regions. These regions apparently provided sites for void formation and oxide growth since the strength and oxidation resistance of Ni-20Cr is much less than Ni-20Cr-2ThO2. This localized oxidation does not appear to reduce the static load bearing capacity of TD-NiCr since long stress rupture lives were observed even with heavily oxidized microstructures. But this oxidation does significantly reduce the ductility and impact resistance of the material. Dispersoid-free bands and voids were also observed for two other dispersion strengthened alloys, TD-NiCrAl and IN-853. Thus, it appears that diffusional creep is charactertistic of dispersion-strengthened alloys and can play a major role in the creep degradation of these materials.
Author |
: |
Publisher |
: |
Total Pages |
: 628 |
Release |
: 1977 |
ISBN-10 |
: MINN:31951000846593M |
ISBN-13 |
: |
Rating |
: 4/5 (3M Downloads) |
Synopsis NASA Technical Note by :
Author |
: John Daniel Whittenberger |
Publisher |
: |
Total Pages |
: 44 |
Release |
: 1977 |
ISBN-10 |
: STANFORD:36105024761699 |
ISBN-13 |
: |
Rating |
: 4/5 (99 Downloads) |
Synopsis Creep degradation in oxide-dispersion-strengthened alloys by : John Daniel Whittenberger
Author |
: United States. Superintendent of Documents |
Publisher |
: |
Total Pages |
: 1282 |
Release |
: 1973 |
ISBN-10 |
: UOM:39015022681723 |
ISBN-13 |
: |
Rating |
: 4/5 (23 Downloads) |
Synopsis Monthly Catalog, United States Public Documents by : United States. Superintendent of Documents
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Author |
: Shojiro Ochiai |
Publisher |
: CRC Press |
Total Pages |
: 823 |
Release |
: 1993-12-17 |
ISBN-10 |
: 9781482293487 |
ISBN-13 |
: 148229348X |
Rating |
: 4/5 (87 Downloads) |
Synopsis Mechanical Properties of Metallic Composites by : Shojiro Ochiai
Provides coverage of dispersion-hardened and fibre-reinforced alloys, addressing principal mechanisms, processing and applications. Mechanical behaviour based on dislocation theory and elastic-plastic mechanics is dealt with and data on advanced composites are provided.
Author |
: |
Publisher |
: |
Total Pages |
: 1388 |
Release |
: |
ISBN-10 |
: WISC:89117116475 |
ISBN-13 |
: |
Rating |
: 4/5 (75 Downloads) |
Synopsis Monthly Catalog of United States Government Publications by :
Author |
: United States. Superintendent of Documents |
Publisher |
: |
Total Pages |
: 1408 |
Release |
: 1976 |
ISBN-10 |
: STANFORD:36105021034173 |
ISBN-13 |
: |
Rating |
: 4/5 (73 Downloads) |
Synopsis Monthly Catalog of United States Government Publications, Cumulative Index by : United States. Superintendent of Documents
Author |
: Kenneth H. Holko |
Publisher |
: |
Total Pages |
: 36 |
Release |
: 1973 |
ISBN-10 |
: UIUC:30112106884817 |
ISBN-13 |
: |
Rating |
: 4/5 (17 Downloads) |
Synopsis An Improved Diffusion Welding Technique for TD-NiCR Sheet by : Kenneth H. Holko
Author |
: Thomas Joseph Moore |
Publisher |
: |
Total Pages |
: 42 |
Release |
: 1973 |
ISBN-10 |
: UIUC:30112106641472 |
ISBN-13 |
: |
Rating |
: 4/5 (72 Downloads) |
Synopsis Solid-state and Fusion Resistance Spot Welding of TD-NiCr Sheet by : Thomas Joseph Moore
By using specially processed TD-NiCr sheet in both 0.4-mm (0.015-in.) and 1.6-mm (0.062-in.) thicknesses and carefully selected welding procedures, solid state resistance spot welds were produced which, after postheating at 1200 C, were indistinguishable from the parent material. Stress-rupture shear tests of single-spot lap joints in 0.4-mm (0.015-in.) thick sheet showed that these welds were as strong as the parent material. Similar results were obtained in tensile-shear tests at room temperature and 1100 C and in fatigue tests. Conventional fusion spot welds in commercial sheet were unsatisfactory because of poor stress-rupture shear properties resulting from metallurgical damage to the parent material.
Author |
: John Daniel Whittenberger |
Publisher |
: |
Total Pages |
: 28 |
Release |
: 1977 |
ISBN-10 |
: UIUC:30112106911073 |
ISBN-13 |
: |
Rating |
: 4/5 (73 Downloads) |
Synopsis Creep and Tensile Properties of Several Oxide-dispersion-strengthened Nickel-base Alloys at 1365 K by : John Daniel Whittenberger