Preparation and printability of 24CrNiMo alloy steel powder for selective laser melting fabricating brake disc

Shi, Chaofan; Chen, Suiyuan; Xia, Qing; Zhuang, Łi

doi:10.1080/00325899.2017.1396019

Cited by 26 publications

(10 citation statements)

References 23 publications

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“…Compared with traditional manufacturing methods, SLM technology has obvious advantages [ 10 , 11 , 12 ] and can be utilized to manufacture metal parts directly from raw materials [ 13 ]. Chen et al [ 14 , 15 ] of Northeastern University have carried out systematic research on the additive manufacturing of 24CrNiMo alloy steel. The results show that 24CrNiMo alloy steel brake discs with superior performance prepared by SLM have great potential application value.…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on Microstructure and Properties of 24CrNiMo Alloy Steel Formed by Selective Laser Melting (SLM)

Zhao

Chen

2021

Materials

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The 24CrNiMo alloy steel powder was used as experimental material. The microstructure and mechanical properties of as-deposited, quenched and tempered (QT) and stress-relief annealed (SR) specimens were analyzed. The X-ray diffraction (XRD) analysis showed that the specimens in the three states were mainly ferrite (α-Fe), in which the as-deposited samples had puny face-centered cubic (FCC) structure Fe (γ-Fe). The microstructure observation showed that the as-deposited specimens were made up of ferrite, granular bainite, a small amount of cementite and residual austenite. The tensile test results indicated that the tensile strength and yield strength of the as-deposited specimens were 1199 MPa and 1053 MPa respectively, and the elongation at break was 10.7%. The elongation of QT and SR specimens increased to 11.6% and 12.8%, respectively. The electron backscattered scattering detection (EBSD) analysis results showed that the small-angle grain boundary content of the as-deposited samples was 58%, and large-angle grain boundary content was 15%. After QT and SR, small-angle and large-angle grain boundaries were obtained than those in the as-deposited specimens. The high-temperature friction and wear properties and thermal fatigue performances of the QT and SR specimens were improved significantly. The QT specimens had the smallest wear and thermal fatigue crack lengths, excellent resistance to friction and wear performance and prevention of crack growth, with an ideal comprehensive properties.

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Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on Microstructure and Properties of 24CrNiMo Alloy Steel Formed by Selective Laser Melting (SLM)

Zhao

Chen

2021

Materials

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“…The application of these parts requires the support of alloy steel materials with strong toughness [6]. At present, the more mature steel materials for DLD research are mainly low-carbon steel such as 12CrNi2 [7], 24CrNiMo [8], and 316 [9]. New alloy steel powders capable of satisfying the DLD method for manufacturing the above core components need further studies.…”

Section: Introductionmentioning

confidence: 99%

Preparation and printability of high performance 15Cr13MoY alloy steel powder for direct laser deposition

et al. 2019

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A novel 15Cr13MoY alloy steel powder used for direct laser deposition was produced using the vacuum induction gas atomisation (VIGA) method. The characteristics and laser printability of the 15Cr13MoY alloy steel powder were studied. The flowability of the spherical powder was 18.98 s/50 g −1 , and apparent density was 4.75 g cm −3 . The fabricated 15Cr13MoY alloy steel samples composed of ferrite and bainite were prepared by DLD. The phases primarily consisted of a Fe-Cr-Mn solid solution M 7 C 3 , M 23 C 6 and Y 2 O 3 . At the optimum laser power of 2200W, the average microhardness of 15Cr13MoY alloy steel sample was 350 HV, the tensile strength was 897 MPa, the yield strength was 704 MPa, the average elongation was 14.5%, and the product of strength and plasticity was 13.0 GPa%. The 15Cr13MoY alloy steel powder produced usingthe VIGA method had good powder characteristics and printability for fabricating the components produced by DLD.

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“…This study is based on previous research [17,18] and the chemical composition of the K417G alloy has been designed. The powder was prepared by vacuum induction melting gas atomisation (VIGA) method, the sphericity, particle size, hollow sphere rate, flowability, apparent density, microstructure, and property of the powder were characterised.…”

Section: Introductionmentioning

confidence: 99%

Characteristics and printability of K417G nickel-base alloy powder prepared by VIGA method

et al. 2018

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Nickel-based K417G superalloy powder is the main material used in laser additive manufacturing (LAM) of aerospace engine turbine blades. In this study, K417G powder was prepared by the vacuum induction melting gas atomisation method (VIGA). Powder characteristics and microstructure were measured, and the properties of fabricated samples were studied. The results show that the powder mean particle size D 50 was 74 μm, flowability was 16.6 s/50 g, apparent density was 4.78 g cm -3 , and the oxygen content of the powder was 0.015%. Powder and LAM sample microstructure consisted of γ, γ ′ , and carbide. The average microhardness was 410 HV, tensile strength was 1080 MPa, yield strength was 828 MPa and elongation was 13.52%. K417G superalloy powder prepared by VIGA method has potential for application in laser additive manufacturing.

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Preparation and printability of 24CrNiMo alloy steel powder for selective laser melting fabricating brake disc

Cited by 26 publications

References 23 publications

Effect of Heat Treatment on Microstructure and Properties of 24CrNiMo Alloy Steel Formed by Selective Laser Melting (SLM)

Effect of Heat Treatment on Microstructure and Properties of 24CrNiMo Alloy Steel Formed by Selective Laser Melting (SLM)

Preparation and printability of high performance 15Cr13MoY alloy steel powder for direct laser deposition

Characteristics and printability of K417G nickel-base alloy powder prepared by VIGA method

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