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The existence and strengthening mechanism of phosphorus in Ni17Cr15Fe-based alloys

文献类型：期刊论文

作者Xue, Chaochao1,2; Liu, Fang2; Yao, Xiaoyu1,2; Liu, Dongyan2; Xin, Xin2; Sun, Wenru2; Zhang, Anwen2; Zhang, Sha2
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2020-10-21
卷号797页码:10
ISSN号0921-5093
关键词Phosphorus Ni-17%Cr-15%Fe alloys M23C6 carbide Tensile properties Strengthening mechanism
DOI10.1016/j.msea.2020.140044
通讯作者Liu, Fang(fangliu@imr.ac.cn) ; Sun, Wenru(wrsun@imr.ac.cn)
英文摘要In this paper, the existing form of phosphorus (P) and its strengthening mechanism in the simplified alloys Ni-17%Cr-15%Fe were investigated. Two different post heat treatments were applied on the as solutionized alloys in order to investigate the precipitates and their effects on the mechanical properties. For the water quenched alloys, no precipitated compounds were observed either at grain boundary or within grain, the rupture strength was enhanced, and the tensile fracture mode transformed from mixture of intergranular and transgranular fracture to single transgranular fracture, which indicated the segregation of P atoms along grain boundary strengthened grain boundary. For the water quenched alloys with additional further aging at 800 degrees C for 8 h and subsequent water quenching, P facilitated the precipitation of intragranular M23C6 carbide and thus the intragranular strength was effectively improved. The results of quantitative chemical element analysis and qualitative TEM/EDS analysis indicated that P enriched in intragranular M23C6 carbide. At the same time, the amount of intergranular M23C6 carbide increased with an increase in P content and its morphology transformed from short rod to granular particle gradually, resulting in the grain boundary precipitation strengthening. The findings of existing state and strengthening mechanism of phosphorus in Ni-17%Cr-15%Fe alloys are of critical importance, which will provide useful information for further interpreting the beneficial effect of P in Ni-based superalloys.
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
出版者ELSEVIER SCIENCE SA
WOS记录号WOS:000579487100011
源URL[http://ir.imr.ac.cn/handle/321006/141052]  
专题金属研究所_中国科学院金属研究所
通讯作者Liu, Fang; Sun, Wenru
作者单位1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Xue, Chaochao,Liu, Fang,Yao, Xiaoyu,et al. The existence and strengthening mechanism of phosphorus in Ni17Cr15Fe-based alloys[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2020,797:10.
APA Xue, Chaochao.,Liu, Fang.,Yao, Xiaoyu.,Liu, Dongyan.,Xin, Xin.,...&Zhang, Sha.(2020).The existence and strengthening mechanism of phosphorus in Ni17Cr15Fe-based alloys.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,797,10.
MLA Xue, Chaochao,et al."The existence and strengthening mechanism of phosphorus in Ni17Cr15Fe-based alloys".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 797(2020):10.

入库方式： OAI收割

来源：金属研究所

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