This study investigated the design and preparation of a Cr@Graphene/Fe nanocomposite inoculant via in situ synthesis in a vacuum tube furnace and mechanical grinding in a ball grinder, where material thermodynamics were considered to refine W18Cr4V high-speed steel (HSS). The effect of modification on the microstructure of W18Cr4V HSS was evaluated using high-resolution transmission electron microscopy and X-ray diffraction. The planes of the Fe3W3C phase and planes of the Cr7C3 phase had collaborative points in the reciprocal space, indicating a coplanar relationship between the Fe3W3C and Cr7C3 lattices. This contributed to an improved nucleation rate and refined matrix structure. The mechanical properties of the W18Cr4V HSS, namely hardness, wear mass, and impact energy, exhibited an overall improvement after modification. Specifically, the hardness and impact toughness after modification and heat treatment increased to 65.2 HRC and 0.209 MJ m−2, respectively.
ChausAS.Modifying cast tungsten-molybdenum high-speed steels with niobium, zirconium, and titanium. Met Sci Heat Treat. 2005; 47(1–2):53–61.
2.
KheirandishS.Effect of Ti and Nb on the formation of carbides and the mechanical properties in as-cast AISI-M7 high–speed steel. ISIJ Int. 2001; 41:1502–1509.
3.
ChausAS.Microstructural and properties evaluation of M2 high speed steel after inoculation addition of powder W and WC. Mater Sci Technol. 2014; 30(9):1105–1115.
4.
ZhouXYinXFangFEffect of calcium modification on the microstructure and properties of high speed steel. Adv Mat Res. 2011; 217–218:457–462.
5.
WangMChenLWangZInfluence of rare earth elements on solidification behavior of a high speed steel for roll using differential scanning calorimetry. J Rare Earths. 2011; 29(11):1089–1094.
6.
DuanJTJiangZQFuHG.Effect of RE-Mg complex modifier on structure and performance of high speed steel roll. J Rare Earths. 2007; 25:259–263.
7.
WangMMuSSunFInfluence of rare earth elements on microstructure and mechanical properties of cast high-speed steel rolls. J Rare Earths. 2007; 25(4):490–494.
8.
ChausASRudnitskiiFIBohachikMSpecial features of microstructure of W-Mo high-speed steel modified with titanium diboride. Met Sci Heat Treat. 2011; 52:575–580.
9.
NingLCuiCX.Structure and properties of GCr15 modified by multiphase ceramic nanoparticles /Fe-C composite inoculants. Mater Sci Eng A. 2018; 738:63–74.
10.
BelyanchikovLN.New high-nitrogen corrosion-resistant tool and high-speed steel. Russ Metall. 2008; 2008(8):761.
11.
KhraisatWNyborgLSotkovszkiP.Effect of silicon, vanadium and nickel on microstructure of liquid phase sintered M3/2 grade high speed steel. Powder Metall. 2005; 48(1):33–38.
12.
DeckerSKrügerL.Influence of high-energy ball milling on Mg-PSZ-reinforced TRIP steel-matrix composites synthesized by FAST/SPS. Mater Sci Eng A. 2019; 761:137974.
13.
StevensMFBernsteinIM.Microstructural trapping effects on hydrogen induced cracking of a microalloyed steel. Metall Trans A. 1989; 20(5):909–919.
14.
LuXQianDLiWEnhanced toughness of bearing steel by combining prior cold deformation with martensite pre-quenching and bainite transformation. Mater Lett. 2019; 234:5–8.
15.
ZhaoJZhaoTHouCSImproving impact toughness of high-C–Cr bearing steel by Si–Mo alloying and low-temperature austempering. Mater Des. 2015; 86:215–220.
16.
WangFQianDHuaLThe effect of prior cold rolling on the carbide dissolution, precipitation and dry wear behaviors of M50 bearing steel. Tribol Int. 2019; 132:253–264.
17.
SunJZhuHYWangWSEffect of boron segregation on the surface crack of low carbon boron-bearing steel. Results Phys. 2019; 13:102153.
18.
ZhangFCYangZN.Development of and perspective on high-performance nanostructured bainitic bearing steel. Engineering. 2019; 5(2):319–328.
19.
DingJHCuiCX.Preparation of in situ Al3Nb- NbB2-NbC/Al inoculant and its effect on microstructures and properties of weldable Al-Cu-Mn alloy. Mater Sci Eng A. 2018; 738:273–282.
20.
OngCYABlackwoodDJLiY.The effects of W content on solid-solution strengthening and the critical Hall-Petch grain size in Ni-W alloy. Surf Coat Technol. 2019; 357:23–27.
21.
HuGX.Fundamentals of Materials Science. Shanghai Jiao Tong University Press; 2006. p. 178–181.
22.
HwangKCLeeSHuiCL.Effects of alloying elements on microstructure and fracture properties of cast high speed steel rolls: part II. Fracture behavior. Mater Sci Eng A. 1998; 254(1–2):296–304.
23.
XuLJWeiSZ.Artificial neural network prediction of retained austenite content and impact toughness of high-vanadium high-speed steel (HVHSS). Mater Sci Eng A. 2006; 433(1–2):251–256.
24.
XuLJWeiSZ.Effect of hardness and impact toughness on wear stability of high-vanadium high-speed steel. Tribology. 2006; 26:377–381.
25.
ChausASHudákováM.Wear resistance of high-speed steels and cutting performance of tool related to structural factors. Wear. 2008; 267(5–8):1051–1054.
26.
WuSWangDDiXStrength-toughness improvement of martensite-austenite dual phase deposited metals after austenite reversed treatment with short holding time. Mater Sci Eng A. 2019; 755:57–65.
27.
SuGGaoXYanTIntercritical tempering enables nanoscale austenite/ϵ-martensite formation in low-C medium-Mn steel: a pathway to control mechanical properties. Mater Sci Eng A. 2018; 736:417–430.
28.
WangYPanDZhaoYEnhanced stability of retained austenites in quenched 25SiMn2MoV steel by electro-pulsing current. Mater Sci Eng A. 2019:138642.
29.
WuSWangDDiXStrength-toughness improvement of martensite-austenite dual phase deposited metals after austenite reversed treatment with short holding time. Mater Sci Eng A. 2019; 755:57–65.
30.
HillRJHowardCJ.Quantitative phase analysis from neutron powder diffraction data using the Rietveld method. J Appl Crystallogr. 1987; 20(6):467–474.
31.
AiYYangY.Quantifying the retained austenite content of GCr15 powder metallurgy by Rietveld refinement method. Phys Test Chem Anal Part A. 2011; 2:12–14.
32.
PfrommerBGCoteMLouieSGRelaxation of crystals with the quasi-Newton method. J Comput Phys. 1997; 131(1):233–240.
33.
YangQAnderssonS.Application of coincidence site lattices for crystal structure description. Acta Crystallographica B. 1987:1–14.
34.
LiuYZJiangYHZhouRFirst-principles calculations of the mechanical and electronic properties of Fe-W-C ternary compound. Comput Mater Sci. 2014; 82:26–32.
planes of the Fe3W3C phase and
planes of the Cr7C3 phase had collaborative points in the reciprocal space, indicating a coplanar relationship between the Fe3W3C and Cr7C3 lattices. This contributed to an improved nucleation rate and refined matrix structure. The mechanical properties of the W18Cr4V HSS, namely hardness, wear mass, and impact energy, exhibited an overall improvement after modification. Specifically, the hardness and impact toughness after modification and heat treatment increased to 65.2 HRC and 0.209 MJ m−2, respectively.