Directionally solidified article with weld repair
A directionally solidified nickel-base superalloy article has a defect therein extending parallel to the solidification direction. The article is repaired by removing any foreign matter present in the defect, and then heating the article to a repair temperature of from about 60 to about 98 percent o...
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| creator | Smashey, Russell W. Snyder, John H. Borne, Bruce L. |
| description | A directionally solidified nickel-base superalloy article has a defect therein extending parallel to the solidification direction. The article is repaired by removing any foreign matter present in the defect, and then heating the article to a repair temperature of from about 60 to about 98 percent of the solidus temperature of the base material in a chamber containing a protective gas that inhibits oxidation of the base material. The defect is filled with a filler metal while maintaining the article at the repair temperature. The filling is accomplished by providing a source of the filler metal of substantially the same composition as the base material of the directionally solidified article, and melting the filler metal into the defect progressively while moving the source of the filler metal relative to the article in a direction parallel to the solidification direction. Optionally, additional artificial heat extraction is accomplished in a heat-flow direction that is within about 45 degrees of the solidification direction, as the filler metal solidifies within the defect. The article may thereafter be heat treated. |
| format | Report |
| fullrecord | <record><control><sourceid>nasa_CYI</sourceid><recordid>TN_cdi_nasa_ntrs_20080007464</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>20080007464</sourcerecordid><originalsourceid>FETCH-nasa_ntrs_200800074643</originalsourceid><addsrcrecordid>eNrjZDB0ySxKTS7JzM9LzMmpVCjOz8lMyUzLTE1RSCwqyUzOSVUozyzJUChPzUlRKEotSMws4mFgTUvMKU7lhdLcDDJuriHOHrp5icWJ8XklRcXxRgYGFgYGBuYmZibGBKQB6TQn4g</addsrcrecordid><sourcetype>Publisher</sourcetype><iscdi>true</iscdi><recordtype>report</recordtype></control><display><type>report</type><title>Directionally solidified article with weld repair</title><source>NASA Technical Reports Server</source><creator>Smashey, Russell W. ; Snyder, John H. ; Borne, Bruce L.</creator><creatorcontrib>Smashey, Russell W. ; Snyder, John H. ; Borne, Bruce L.</creatorcontrib><description>A directionally solidified nickel-base superalloy article has a defect therein extending parallel to the solidification direction. The article is repaired by removing any foreign matter present in the defect, and then heating the article to a repair temperature of from about 60 to about 98 percent of the solidus temperature of the base material in a chamber containing a protective gas that inhibits oxidation of the base material. The defect is filled with a filler metal while maintaining the article at the repair temperature. The filling is accomplished by providing a source of the filler metal of substantially the same composition as the base material of the directionally solidified article, and melting the filler metal into the defect progressively while moving the source of the filler metal relative to the article in a direction parallel to the solidification direction. Optionally, additional artificial heat extraction is accomplished in a heat-flow direction that is within about 45 degrees of the solidification direction, as the filler metal solidifies within the defect. The article may thereafter be heat treated.</description><language>eng</language><publisher>Headquarters</publisher><subject>Metals And Metallic Materials</subject><creationdate>2003</creationdate><rights>Copyright Determination: GOV_PUBLIC_USE_PERMITTED</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>777,797,4476</link.rule.ids><linktorsrc>$$Uhttps://ntrs.nasa.gov/citations/20080007464$$EView_record_in_NASA$$FView_record_in_$$GNASA$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Smashey, Russell W.</creatorcontrib><creatorcontrib>Snyder, John H.</creatorcontrib><creatorcontrib>Borne, Bruce L.</creatorcontrib><title>Directionally solidified article with weld repair</title><description>A directionally solidified nickel-base superalloy article has a defect therein extending parallel to the solidification direction. The article is repaired by removing any foreign matter present in the defect, and then heating the article to a repair temperature of from about 60 to about 98 percent of the solidus temperature of the base material in a chamber containing a protective gas that inhibits oxidation of the base material. The defect is filled with a filler metal while maintaining the article at the repair temperature. The filling is accomplished by providing a source of the filler metal of substantially the same composition as the base material of the directionally solidified article, and melting the filler metal into the defect progressively while moving the source of the filler metal relative to the article in a direction parallel to the solidification direction. Optionally, additional artificial heat extraction is accomplished in a heat-flow direction that is within about 45 degrees of the solidification direction, as the filler metal solidifies within the defect. The article may thereafter be heat treated.</description><subject>Metals And Metallic Materials</subject><fulltext>true</fulltext><rsrctype>report</rsrctype><creationdate>2003</creationdate><recordtype>report</recordtype><sourceid>CYI</sourceid><recordid>eNrjZDB0ySxKTS7JzM9LzMmpVCjOz8lMyUzLTE1RSCwqyUzOSVUozyzJUChPzUlRKEotSMws4mFgTUvMKU7lhdLcDDJuriHOHrp5icWJ8XklRcXxRgYGFgYGBuYmZibGBKQB6TQn4g</recordid><startdate>20031209</startdate><enddate>20031209</enddate><creator>Smashey, Russell W.</creator><creator>Snyder, John H.</creator><creator>Borne, Bruce L.</creator><scope>CYE</scope><scope>CYI</scope></search><sort><creationdate>20031209</creationdate><title>Directionally solidified article with weld repair</title><author>Smashey, Russell W. ; Snyder, John H. ; Borne, Bruce L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-nasa_ntrs_200800074643</frbrgroupid><rsrctype>reports</rsrctype><prefilter>reports</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Metals And Metallic Materials</topic><toplevel>online_resources</toplevel><creatorcontrib>Smashey, Russell W.</creatorcontrib><creatorcontrib>Snyder, John H.</creatorcontrib><creatorcontrib>Borne, Bruce L.</creatorcontrib><collection>NASA Scientific and Technical Information</collection><collection>NASA Technical Reports Server</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Smashey, Russell W.</au><au>Snyder, John H.</au><au>Borne, Bruce L.</au><format>book</format><genre>unknown</genre><ristype>RPRT</ristype><btitle>Directionally solidified article with weld repair</btitle><date>2003-12-09</date><risdate>2003</risdate><abstract>A directionally solidified nickel-base superalloy article has a defect therein extending parallel to the solidification direction. The article is repaired by removing any foreign matter present in the defect, and then heating the article to a repair temperature of from about 60 to about 98 percent of the solidus temperature of the base material in a chamber containing a protective gas that inhibits oxidation of the base material. The defect is filled with a filler metal while maintaining the article at the repair temperature. The filling is accomplished by providing a source of the filler metal of substantially the same composition as the base material of the directionally solidified article, and melting the filler metal into the defect progressively while moving the source of the filler metal relative to the article in a direction parallel to the solidification direction. Optionally, additional artificial heat extraction is accomplished in a heat-flow direction that is within about 45 degrees of the solidification direction, as the filler metal solidifies within the defect. The article may thereafter be heat treated.</abstract><cop>Headquarters</cop><oa>free_for_read</oa></addata></record> |
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| language | eng |
| recordid | cdi_nasa_ntrs_20080007464 |
| source | NASA Technical Reports Server |
| subjects | Metals And Metallic Materials |
| title | Directionally solidified article with weld repair |
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