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Carbides Evolution and Tensile Property of 4Cr5MoSiV1 Die Steel with Rare Earth Addition
Liu, Hanghang; Fu, Paixian; Liu, Hongwei; Sun, Chen; Gao, Jinzhu; Li, Dianzhong; Fu, PX (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.; Fu, PX (reprint author), Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
2017-10-01
Source PublicationMDPI AG
ISSN2075-4701
Volume7Issue:10Pages:-
AbstractStudies of 4Cr5MoSiV1 die steel suggest that under appropriate conditions, additions of rare earth (RE) can enhance tensile property. This improvement is apparently due to the more uniform distribution of carbides and the enhancement of precipitation strengthening after RE additions. In this present work, the effect of the RE addition on the carbides evolution and tensile property of 4Cr5MoSiV1 steel with various RE contents (0, 0.018, 0.048 and 0.15 wt %) were systematically investigated. The two-dimensional detection techniques such as optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD) were used to investigate the carbides evolution of as-cast, annealed and tempered with RE addition. The results indicated that the carbides in 4Cr5MoSiV1 steels were modified by adding the suitable amount of RE. The eutectic structure and coarse eutectic carbides were all refining and the morphology of the annealed carbides initiated change from strip shape to ellipsoidal shape compared with the unmodified test steel (0RE). In addition, the amount of the tempered M8C7 carbides increased initially and then decreased with the alteration of RE addition from 0.018 to 0.15 wt%. Notably, the tensile test indicated that the average value of ultimate tensile strength (UTS) and elongation rate of 0.048RE steel increased slightly to 1474MPa and 15%, higher than the 1452 MPa and 12% for the unmodified test steel (0RE), respectively. Such an addition of RE (0.048 wt %) would have a significant effect on the carbides evolution of as-cast, annealed and tempered and resulting in the tensile property of 4Cr5MoSiV1 die steel.; Studies of 4Cr5MoSiV1 die steel suggest that under appropriate conditions, additions of rare earth (RE) can enhance tensile property. This improvement is apparently due to the more uniform distribution of carbides and the enhancement of precipitation strengthening after RE additions. In this present work, the effect of the RE addition on the carbides evolution and tensile property of 4Cr5MoSiV1 steel with various RE contents (0, 0.018, 0.048 and 0.15 wt %) were systematically investigated. The two-dimensional detection techniques such as optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD) were used to investigate the carbides evolution of as-cast, annealed and tempered with RE addition. The results indicated that the carbides in 4Cr5MoSiV1 steels were modified by adding the suitable amount of RE. The eutectic structure and coarse eutectic carbides were all refining and the morphology of the annealed carbides initiated change from strip shape to ellipsoidal shape compared with the unmodified test steel (0RE). In addition, the amount of the tempered M8C7 carbides increased initially and then decreased with the alteration of RE addition from 0.018 to 0.15 wt%. Notably, the tensile test indicated that the average value of ultimate tensile strength (UTS) and elongation rate of 0.048RE steel increased slightly to 1474MPa and 15%, higher than the 1452 MPa and 12% for the unmodified test steel (0RE), respectively. Such an addition of RE (0.048 wt %) would have a significant effect on the carbides evolution of as-cast, annealed and tempered and resulting in the tensile property of 4Cr5MoSiV1 die steel.
description.department[liu, hanghang ; fu, paixian ; liu, hongwei ; sun, chen ; gao, jinzhu ; li, dianzhong] chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, liaoning, peoples r china ; [liu, hanghang ; fu, paixian ; liu, hongwei ; sun, chen ; gao, jinzhu ; li, dianzhong] univ sci & technol china, sch mat sci & engn, 72 wenhua rd, shenyang 110016, liaoning, peoples r china
KeywordRare Earth 4cr5mosiv1 Die Steel Carbides Evolution Tensile Strength Elongation Rate
Subject AreaMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Key Research and Development Program of China [2016YFB0300401]; Cooperation Program of Hubei province; Chinese Academy of Sciences (The Research and Development of Key Technologies for Special Steel of Homogeneous High Performance)
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79053
Collection中国科学院金属研究所
Corresponding AuthorFu, PX (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.; Fu, PX (reprint author), Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Liu, Hanghang,Fu, Paixian,Liu, Hongwei,et al. Carbides Evolution and Tensile Property of 4Cr5MoSiV1 Die Steel with Rare Earth Addition[J]. MDPI AG,2017,7(10):-.
APA Liu, Hanghang.,Fu, Paixian.,Liu, Hongwei.,Sun, Chen.,Gao, Jinzhu.,...&Fu, PX .(2017).Carbides Evolution and Tensile Property of 4Cr5MoSiV1 Die Steel with Rare Earth Addition.MDPI AG,7(10),-.
MLA Liu, Hanghang,et al."Carbides Evolution and Tensile Property of 4Cr5MoSiV1 Die Steel with Rare Earth Addition".MDPI AG 7.10(2017):-.
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