| Effect of Long-Term Thermal Exposures on Tensile Behaviors of K416B Nickel-Based Superalloy | |
| Chen, Mao-Kai1,2; Xie, Jun1; Shu, De-Long1; Hou, Gui-Chen1; Xun, Shu-Ling1; Yu, Jin-Jiang1; Liu, Li-Rong2; Sun, Xiao-Feng1; Zhou, Yi-Zhou1 | |
| Corresponding Author | Xie, Jun(junxie@imr.ac.cn) |
| 2020-06-09 | |
| Source Publication | ACTA METALLURGICA SINICA-ENGLISH LETTERS
 |
| ISSN | 1006-7191 |
| Pages | 10 |
| Abstract | The effect of long-term thermal exposure on the tensile behavior of a high W content nickel-based superalloy K416B was investigated. The microstructure and the deformation characteristics were observed by scanning electron microscopy and transmission electron microscopy, and the phase transformation of the alloy during long-term thermal exposure was analyzed by X-ray diffraction patterns and differential thermal analysis. Results showed that after thermal exposure at 1000 degrees C, theMC carbides in the K416B alloy decomposed intoM(6)C. During tensile deformation, dislocations slipping in gamma matrix crossed over theM(6)C by Orowan bowing mechanism. With the increase of thermal exposure time, the secondaryM(6)C reduced greatly the yield strength of the alloy at room temperature. Meanwhile, the continuous distribution of the secondaryM(6)C with great brittleness in the grain boundary could become the main source of crack, which might change the fracture characteristic of the alloy from trans-granular to intergranular. |
| Keyword | K416B superalloy Thermal exposure Deformation mechanism Fracture characteristics |
| Funding Organization | National Basic Research Program of China ; National Natural Science Foundation of China ; State Key Laboratory of Solidification Processing in NWPU ; Liaoning Provincial Natural Science Foundation of China |
| DOI | 10.1007/s40195-020-01075-3 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Basic Research Program of China[2010CB631200] ; National Basic Research Program of China[2010CB631206] ; National Natural Science Foundation of China[51701212] ; National Natural Science Foundation of China[50931004] ; National Natural Science Foundation of China[51571196] ; National Natural Science Foundation of China[51601192] ; National Natural Science Foundation of China[51671188] ; State Key Laboratory of Solidification Processing in NWPU[SKLSP201747] ; Liaoning Provincial Natural Science Foundation of China[2019-MS-336] |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000539171300001 |
| Publisher | CHINESE ACAD SCIENCES, INST METAL RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/139361 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Xie, Jun |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Shenyang Univ Technol, Shenyang 110870, Peoples R China |
| Recommended Citation GB/T 7714 | Chen, Mao-Kai,Xie, Jun,Shu, De-Long,et al. Effect of Long-Term Thermal Exposures on Tensile Behaviors of K416B Nickel-Based Superalloy[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2020:10. |
| APA | Chen, Mao-Kai.,Xie, Jun.,Shu, De-Long.,Hou, Gui-Chen.,Xun, Shu-Ling.,...&Zhou, Yi-Zhou.(2020).Effect of Long-Term Thermal Exposures on Tensile Behaviors of K416B Nickel-Based Superalloy.ACTA METALLURGICA SINICA-ENGLISH LETTERS,10. |
| MLA | Chen, Mao-Kai,et al."Effect of Long-Term Thermal Exposures on Tensile Behaviors of K416B Nickel-Based Superalloy".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2020):10. |
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