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Effect of Ni addition on precipitation strengthening of Cu-rich precipitates in Fe-Cu-Mn alloy
Li, Tong; Xiong, Xiang-Yuan; Shen, Qin; Wang, Xiao-Jiao; Li, Jia-Bao; Liu Wen-Qing
2019-10-01
Source PublicationMATERIALS RESEARCH EXPRESS
ISSN2053-1591
Volume6Issue:10
SubtypeArticle
AbstractThe Fe-1.63Cu-2.17Mn (wt%) and Fe-1.57Cu-2.15Mn-3.23Ni alloys were aged at 450 degrees C to investigate the effects of the addition of Ni on the precipitation process of Cu-rich precipitates. Their micro-hardness and tensile strength in relation to the microstructures were examined. It has been found for the two alloys the peak hardness appeared at the same ageing time; the hardness and strength of Fe-Cu-Mn-Ni alloy were higher than those of Fe-Cu-Mn alloy over the whole range of aging time due to the solid solution strengthening of Ni addition; the response of ageing treatment in the Fe-Cu-Mn-Ni alloy was smaller than that in the Fe-Cu-Mn alloy, because Ni addition decreased the nucleation rate of Cu-rich clusters in alloy and weakened the precipitation strengthening effect. After peak aging, Ni atoms were enriched at the precipitate/matrix interface close to the matrix side, and promoted the segregation of Mn atoms at the interface close to the Cu-rich precipitate, forming the core-shell structure with the core of Cu-rich precipitate, which reduced the rate of growth of the Cu-rich precipitates and the decline rate of hardness of Fe-Cu-Mn-Ni alloy.
KeywordFe-Cu-Mn alloy Cu precipitate atom probe tomography Ni effect
DOI10.1088/2053-1591/ab34dc
Language英语
WOS Research AreaMaterials Science
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26806
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Li, Tong,Xiong, Xiang-Yuan,Shen, Qin,et al. Effect of Ni addition on precipitation strengthening of Cu-rich precipitates in Fe-Cu-Mn alloy[J]. MATERIALS RESEARCH EXPRESS,2019,6(10).
APA Li, Tong,Xiong, Xiang-Yuan,Shen, Qin,Wang, Xiao-Jiao,Li, Jia-Bao,&Liu Wen-Qing.(2019).Effect of Ni addition on precipitation strengthening of Cu-rich precipitates in Fe-Cu-Mn alloy.MATERIALS RESEARCH EXPRESS,6(10).
MLA Li, Tong,et al."Effect of Ni addition on precipitation strengthening of Cu-rich precipitates in Fe-Cu-Mn alloy".MATERIALS RESEARCH EXPRESS 6.10(2019).
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