Improvement of the Oxidation Resistance of Dispersion Strengthened Nickel-Chromium Alloys
The cyclic dynamic oxidation and hot corrosion behavior at 2000F (1093C) and 2200F (1204C) of Ni/Cr/ThO2 alloys modified by additions of 5 w/o aluminum and 0.2 w/o yttrium or 3 - 5 w/o manganese were measured. Alloys of the composition Ni/16-20Cr/5Al/2ThO2 exhibited the best oxidation resistance hav...
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| creator | Timbres,Donald H Norris,L. Fredrick Clegg,Maurice A |
| description | The cyclic dynamic oxidation and hot corrosion behavior at 2000F (1093C) and 2200F (1204C) of Ni/Cr/ThO2 alloys modified by additions of 5 w/o aluminum and 0.2 w/o yttrium or 3 - 5 w/o manganese were measured. Alloys of the composition Ni/16-20Cr/5Al/2ThO2 exhibited the best oxidation resistance having a smaller weight change and less damage by spalling or erosion than the manganese-modified alloys. A thermomechanical procedure was defined to produce a coarse grain microstructure in the aluminum-modified alloys. The procedure consists of primary working by extrusion followed by secondary working by swaging or rolling. The resulting coarse grained alloys have good stress-rupture strength at 2000F (1093C) but the ultimate tensile strength is low. A coarse thoria size resulting during processing of the powder through the consolidation step was believed to have contributed to the low tensile strengths at 2000F (1093C). (Author) |
| format | Report |
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Fredrick ; Clegg,Maurice A ; SHERRITT GORDON MINES LTD FORT SASKATCHEWAN (ALBERTA)</creatorcontrib><description>The cyclic dynamic oxidation and hot corrosion behavior at 2000F (1093C) and 2200F (1204C) of Ni/Cr/ThO2 alloys modified by additions of 5 w/o aluminum and 0.2 w/o yttrium or 3 - 5 w/o manganese were measured. Alloys of the composition Ni/16-20Cr/5Al/2ThO2 exhibited the best oxidation resistance having a smaller weight change and less damage by spalling or erosion than the manganese-modified alloys. A thermomechanical procedure was defined to produce a coarse grain microstructure in the aluminum-modified alloys. The procedure consists of primary working by extrusion followed by secondary working by swaging or rolling. The resulting coarse grained alloys have good stress-rupture strength at 2000F (1093C) but the ultimate tensile strength is low. A coarse thoria size resulting during processing of the powder through the consolidation step was believed to have contributed to the low tensile strengths at 2000F (1093C). (Author)</description><language>eng</language><subject>ALUMINUM ALLOYS ; CANADA ; CHROMIUM ALLOYS ; CORROSION INHIBITION ; CORROSION RESISTANCE ; DISPERSION HARDENING ; HEAT RESISTANT ALLOYS ; HEAT RESISTANT METALS ; MECHANICAL WORKING ; NICKEL ALLOYS ; Properties of Metals and Alloys ; SUPER ALLOYS ; THERMOMECHANICS</subject><creationdate>1972</creationdate><rights>APPROVED FOR PUBLIC RELEASE</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,776,881,27546,27547</link.rule.ids><linktorsrc>$$Uhttps://apps.dtic.mil/sti/citations/AD0748266$$EView_record_in_DTIC$$FView_record_in_$$GDTIC$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Timbres,Donald H</creatorcontrib><creatorcontrib>Norris,L. Fredrick</creatorcontrib><creatorcontrib>Clegg,Maurice A</creatorcontrib><creatorcontrib>SHERRITT GORDON MINES LTD FORT SASKATCHEWAN (ALBERTA)</creatorcontrib><title>Improvement of the Oxidation Resistance of Dispersion Strengthened Nickel-Chromium Alloys</title><description>The cyclic dynamic oxidation and hot corrosion behavior at 2000F (1093C) and 2200F (1204C) of Ni/Cr/ThO2 alloys modified by additions of 5 w/o aluminum and 0.2 w/o yttrium or 3 - 5 w/o manganese were measured. Alloys of the composition Ni/16-20Cr/5Al/2ThO2 exhibited the best oxidation resistance having a smaller weight change and less damage by spalling or erosion than the manganese-modified alloys. A thermomechanical procedure was defined to produce a coarse grain microstructure in the aluminum-modified alloys. The procedure consists of primary working by extrusion followed by secondary working by swaging or rolling. The resulting coarse grained alloys have good stress-rupture strength at 2000F (1093C) but the ultimate tensile strength is low. A coarse thoria size resulting during processing of the powder through the consolidation step was believed to have contributed to the low tensile strengths at 2000F (1093C). (Author)</description><subject>ALUMINUM ALLOYS</subject><subject>CANADA</subject><subject>CHROMIUM ALLOYS</subject><subject>CORROSION INHIBITION</subject><subject>CORROSION RESISTANCE</subject><subject>DISPERSION HARDENING</subject><subject>HEAT RESISTANT ALLOYS</subject><subject>HEAT RESISTANT METALS</subject><subject>MECHANICAL WORKING</subject><subject>NICKEL ALLOYS</subject><subject>Properties of Metals and Alloys</subject><subject>SUPER ALLOYS</subject><subject>THERMOMECHANICS</subject><fulltext>true</fulltext><rsrctype>report</rsrctype><creationdate>1972</creationdate><recordtype>report</recordtype><sourceid>1RU</sourceid><recordid>eNrjZIj0zC0oyi9LzU3NK1HIT1MoyUhV8K_ITEksyczPUwhKLc4sLknMS04FyblkFhekFhWDJIJLilLz0oGK81JTFPwyk7NTc3SdM4ryczNLcxUcc3LyK4t5GFjTEnOKU3mhNDeDjJtriLOHbkpJZnJ8cUlmXmpJvKOLgbmJhZGZmTEBaQC6EzgD</recordid><startdate>197207</startdate><enddate>197207</enddate><creator>Timbres,Donald H</creator><creator>Norris,L. Fredrick</creator><creator>Clegg,Maurice A</creator><scope>1RU</scope><scope>BHM</scope></search><sort><creationdate>197207</creationdate><title>Improvement of the Oxidation Resistance of Dispersion Strengthened Nickel-Chromium Alloys</title><author>Timbres,Donald H ; Norris,L. Fredrick ; Clegg,Maurice A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-dtic_stinet_AD07482663</frbrgroupid><rsrctype>reports</rsrctype><prefilter>reports</prefilter><language>eng</language><creationdate>1972</creationdate><topic>ALUMINUM ALLOYS</topic><topic>CANADA</topic><topic>CHROMIUM ALLOYS</topic><topic>CORROSION INHIBITION</topic><topic>CORROSION RESISTANCE</topic><topic>DISPERSION HARDENING</topic><topic>HEAT RESISTANT ALLOYS</topic><topic>HEAT RESISTANT METALS</topic><topic>MECHANICAL WORKING</topic><topic>NICKEL ALLOYS</topic><topic>Properties of Metals and Alloys</topic><topic>SUPER ALLOYS</topic><topic>THERMOMECHANICS</topic><toplevel>online_resources</toplevel><creatorcontrib>Timbres,Donald H</creatorcontrib><creatorcontrib>Norris,L. Fredrick</creatorcontrib><creatorcontrib>Clegg,Maurice A</creatorcontrib><creatorcontrib>SHERRITT GORDON MINES LTD FORT SASKATCHEWAN (ALBERTA)</creatorcontrib><collection>DTIC Technical Reports</collection><collection>DTIC STINET</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Timbres,Donald H</au><au>Norris,L. Fredrick</au><au>Clegg,Maurice A</au><aucorp>SHERRITT GORDON MINES LTD FORT SASKATCHEWAN (ALBERTA)</aucorp><format>book</format><genre>unknown</genre><ristype>RPRT</ristype><btitle>Improvement of the Oxidation Resistance of Dispersion Strengthened Nickel-Chromium Alloys</btitle><date>1972-07</date><risdate>1972</risdate><abstract>The cyclic dynamic oxidation and hot corrosion behavior at 2000F (1093C) and 2200F (1204C) of Ni/Cr/ThO2 alloys modified by additions of 5 w/o aluminum and 0.2 w/o yttrium or 3 - 5 w/o manganese were measured. Alloys of the composition Ni/16-20Cr/5Al/2ThO2 exhibited the best oxidation resistance having a smaller weight change and less damage by spalling or erosion than the manganese-modified alloys. A thermomechanical procedure was defined to produce a coarse grain microstructure in the aluminum-modified alloys. The procedure consists of primary working by extrusion followed by secondary working by swaging or rolling. The resulting coarse grained alloys have good stress-rupture strength at 2000F (1093C) but the ultimate tensile strength is low. A coarse thoria size resulting during processing of the powder through the consolidation step was believed to have contributed to the low tensile strengths at 2000F (1093C). (Author)</abstract><oa>free_for_read</oa></addata></record> |
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| source | DTIC Technical Reports |
| subjects | ALUMINUM ALLOYS CANADA CHROMIUM ALLOYS CORROSION INHIBITION CORROSION RESISTANCE DISPERSION HARDENING HEAT RESISTANT ALLOYS HEAT RESISTANT METALS MECHANICAL WORKING NICKEL ALLOYS Properties of Metals and Alloys SUPER ALLOYS THERMOMECHANICS |
| title | Improvement of the Oxidation Resistance of Dispersion Strengthened Nickel-Chromium Alloys |
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