完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Liao, Jian-Hong | en_US |
dc.contributor.author | Bor, Hui-Yun | en_US |
dc.contributor.author | Chao, Chuen-Guang | en_US |
dc.contributor.author | Liu, Tzeng-Feng | en_US |
dc.date.accessioned | 2014-12-08T15:37:28Z | - |
dc.date.available | 2014-12-08T15:37:28Z | - |
dc.date.issued | 2011-02-01 | en_US |
dc.identifier.issn | 1345-9678 | en_US |
dc.identifier.uri | http://dx.doi.org/10.2320/matertrans.M2010299 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/25780 | - |
dc.description.abstract | This study investigated the influence of rhenium on the mechanical behavior and fracture mechanism of a fine-grain Mar-M247 superalloy at elevated temperatures. Tensile test results showed that the addition of 3 mass% Re significantly improved the ultimate tensile strength and yield strength from room temperature to 760 degrees C. Creep test results showed that steady-state creep behavior dominated creep properties under the test condition of 760 degrees C/724 MPa. The steady-state creep rate and creep life of alloy with 3 mass% Re was reduced by 31% and prolonged by 63%, respectively, compared to alloy without Re. The improvement in tensile and creep properties in 3 mass% Re alloy was associated with a decrease in grain and gamma' size and an increase in strength of gamma/gamma' matrix. However, adding 4.5 mass% Re resulted in a decrease in the tensile and creep properties due to the formation of needle-like P phase in the grain interior. Fracture analysis demonstrated that during tensile and creep tests, cracks initiated and propagated along grain boundary in alloy without Re and containing 3 mass% Re alloy; however, in the alloy containing 4.5 mass% Re, cracks initiated and propagated along grain boundary and the P phase/matrix interface. Under the current tensile and creep conditions, 3 mass% Re was an optimal addition for casting a fine-grain Mar-M247 superalloy. [doi: 10.2320/matertrans.M2010299] | en_US |
dc.language.iso | en_US | en_US |
dc.subject | superalloy | en_US |
dc.subject | rhenium | en_US |
dc.subject | tensile | en_US |
dc.subject | creep | en_US |
dc.subject | fracture | en_US |
dc.title | Influence of Rhenium on the Mechanical Behavior and Fracture Mechanism of a Fine-Grain Superalloy at Elevated Temperatures | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.2320/matertrans.M2010299 | en_US |
dc.identifier.journal | MATERIALS TRANSACTIONS | en_US |
dc.citation.volume | 52 | en_US |
dc.citation.issue | 2 | en_US |
dc.citation.spage | 201 | en_US |
dc.citation.epage | 209 | en_US |
dc.contributor.department | 材料科學與工程學系 | zh_TW |
dc.contributor.department | Department of Materials Science and Engineering | en_US |
dc.identifier.wosnumber | WOS:000289186800014 | - |
dc.citation.woscount | 2 | - |
顯示於類別: | 期刊論文 |