Embrittlement of Fuel Gas Piping Made of Wrought Nickel-Based Superalloy Due to Inadequate Heat Treatment
Cold-drawn and cold-bent seamless Alloy 617 pipes were received by a gas turbine engine manufacturer for final assembly. They exhibited multiple cracking on the surface. The extrados of bending zones were most affected by this condition. It was determined that the metallurgical root cause of the pro...
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| Veröffentlicht in: | Praktische Metallographie 2013-10, Vol.50 (10), p.706-715 |
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| creator | Neidel, A. Gädicke, T. |
| description | Cold-drawn and cold-bent seamless Alloy 617 pipes were received by a gas turbine engine manufacturer for final assembly. They exhibited multiple cracking on the surface. The extrados of bending zones were most affected by this condition. It was determined that the metallurgical root cause of the problem was inadequate heat treatment by the supplier of the semi-finished product. The cracking upon cold bending the seamless pipes was caused by embrittlement of the pipes’ surface due to nitridation and a further drop in formability as a result of grin boundary embrittlement by secondary carbide precipitates. |
| doi_str_mv | 10.3139/147.110238 |
| format | Article |
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They exhibited multiple cracking on the surface. The extrados of bending zones were most affected by this condition. It was determined that the metallurgical root cause of the problem was inadequate heat treatment by the supplier of the semi-finished product. The cracking upon cold bending the seamless pipes was caused by embrittlement of the pipes’ surface due to nitridation and a further drop in formability as a result of grin boundary embrittlement by secondary carbide precipitates.</description><identifier>ISSN: 0032-678X</identifier><identifier>EISSN: 2195-8599</identifier><identifier>DOI: 10.3139/147.110238</identifier><identifier>CODEN: PMTLA5</identifier><language>eng</language><publisher>München: De Gruyter</publisher><subject>Applied sciences ; Cross-disciplinary physics: materials science; rheology ; Exact sciences and technology ; Fractures ; Materials science ; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology ; Metals. 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They exhibited multiple cracking on the surface. The extrados of bending zones were most affected by this condition. It was determined that the metallurgical root cause of the problem was inadequate heat treatment by the supplier of the semi-finished product. The cracking upon cold bending the seamless pipes was caused by embrittlement of the pipes’ surface due to nitridation and a further drop in formability as a result of grin boundary embrittlement by secondary carbide precipitates.</description><subject>Applied sciences</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Exact sciences and technology</subject><subject>Fractures</subject><subject>Materials science</subject><subject>Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology</subject><subject>Metals. 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Rheology. Fracture mechanics. Tribology</topic><topic>Metals. Metallurgy</topic><topic>Phase diagrams and microstructures developed by solidification and solid-solid phase transformations</topic><topic>Physics</topic><topic>Solidification</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Neidel, A.</creatorcontrib><creatorcontrib>Gädicke, T.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Praktische Metallographie</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Neidel, A.</au><au>Gädicke, T.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Embrittlement of Fuel Gas Piping Made of Wrought Nickel-Based Superalloy Due to Inadequate Heat Treatment</atitle><jtitle>Praktische Metallographie</jtitle><date>2013-10-11</date><risdate>2013</risdate><volume>50</volume><issue>10</issue><spage>706</spage><epage>715</epage><pages>706-715</pages><issn>0032-678X</issn><eissn>2195-8599</eissn><coden>PMTLA5</coden><abstract>Cold-drawn and cold-bent seamless Alloy 617 pipes were received by a gas turbine engine manufacturer for final assembly. 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| source | De Gruyter journals |
| subjects | Applied sciences Cross-disciplinary physics: materials science rheology Exact sciences and technology Fractures Materials science Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals. Metallurgy Phase diagrams and microstructures developed by solidification and solid-solid phase transformations Physics Solidification |
| title | Embrittlement of Fuel Gas Piping Made of Wrought Nickel-Based Superalloy Due to Inadequate Heat Treatment |
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