| Activation Energy Calculations for the Portevin-Le Chatelier Effect in Nimonic 263 Superalloy | |
| Han, G. M.; Tian, C. G.; Chu, Z. K.; Cui, C. Y.; Hu, Z. Q.; Sun, X. F.; chycui@imr.ac.cn | |
| 2015 | |
| Source Publication | METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
 |
| ISSN | 1073-5623 |
| Volume | 46AIssue:10Pages:4629-4635 |
| Abstract | The Portevin-Le Chatelier (PLC) effect in the Nimonic 263 superalloy was investigated by tensile test in a wide temperature range, from room temperature to 1033 K (760 A degrees C), and at strain rates between 0.1 and 4 x 10(-4) s(-1). Types A, B, and C serrations were observed depending upon the test temperatures and strain rates. The activation energy (Q) for serrated flow was determined by employing various methodologies for T < 723 K (450 A degrees C), where a normal PLC effect was observed. The value of Q was found to be independent of the method employed. The average Q value of 70 KJ/mol was found to be in agreement with that for diffusion of substitutional solutes such as Cr and Mo in a Ni matrix by pipe diffusion. At temperatures ranging from 723 K to 923 K (450 A degrees C to 650 A degrees C), type C serrations and an inverse PLC effect were noticed, which may be caused by unlocking process. |
| description.department | [han, g. m. ; tian, c. g. ; chu, z. k. ; cui, c. y. ; hu, z. q. ; sun, x. f.] chinese acad sci, inst met res, superalloy div, shenyang 110016, peoples r china |
| Funding Organization | High Technology Research and Development Program of China [2014AA041701]; National Natural Science Foundation of China (NSFC) [51171179, 51271174, 51331005, 11332010] |
| Indexed By | sci |
| Language | 英语 |
| WOS ID | WOS:000360558200024 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/74613 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | chycui@imr.ac.cn |
| Recommended Citation GB/T 7714 | Han, G. M.,Tian, C. G.,Chu, Z. K.,et al. Activation Energy Calculations for the Portevin-Le Chatelier Effect in Nimonic 263 Superalloy[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2015,46A(10):4629-4635. |
| APA | Han, G. M..,Tian, C. G..,Chu, Z. K..,Cui, C. Y..,Hu, Z. Q..,...&chycui@imr.ac.cn.(2015).Activation Energy Calculations for the Portevin-Le Chatelier Effect in Nimonic 263 Superalloy.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,46A(10),4629-4635. |
| MLA | Han, G. M.,et al."Activation Energy Calculations for the Portevin-Le Chatelier Effect in Nimonic 263 Superalloy".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 46A.10(2015):4629-4635. |
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