The Preparation Process, Microstructure and Properties of Cellular TiC-High Mn Steel-Bonded Carbide

Li, Guoping; Zhou, Hongkang; Yang, Hao; Huang, Mingchu; Peng, Yingbiao; Luo, Fenghua

doi:10.3390/ma13030757

Cited by 6 publications

(2 citation statements)

References 30 publications

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“…The core is residual TiC particles and the rim is (Ti,W,Mo,…)C solid solution. [ 33,34 ] Although the hardness of the rim may be lower than that of TiC, the formation of the core–rim structure produces a large number of interfaces, refining the microstructure and achieving the role of fine grain strengthening. At the same time, it plays a transitional role between the TiC particles and binder to improve the strength.…”

Section: Discussionmentioning

confidence: 99%

TiC–High Mn Steel‐Bonded Cermets with Improved Strength and Impact Toughness

Zhou

et al. 2020

steel research int.

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TiC–high Mn steel‐bonded cermets are prepared by powder metallurgy techniques. The effects of (Ti0.5W0.5)C or WC on the microstructure, hardness, transverse rupture strength (TRS), and impact toughness (IM) are investigated. The results show that regardless of the additives used, the hardness and TRS of cermets increase with the increase in W content. However, IM is not directly proportional to the W content. Peak IM value is obtained at 5% WC addition. The highest IM of 15.12 J cm−2 is measured from the cermet with (Ti0.5W0.5)C additive with a hardness and TRS of 64.8 HRC and 2510 MPa, respectively. Liquid phase sintering occurs at vacuum sintering. Black core–gray outer rim structure is formed in cermets with WC additives and white inner rims appear in cermets with higher W content. White core–gray rim structure is formed in cermets with (Ti0.5W0.5)C additives. The impact fracture mode of the cermets is the intergranular fracture accompanied by the tearing edges of the binder. The tearing of the high Mn steel binder is the main source of IM. IM peaks are attributed to the contradictory effects of decreased fraction and refined binder microstructure.

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Section: Discussionmentioning

confidence: 99%

TiC–High Mn Steel‐Bonded Cermets with Improved Strength and Impact Toughness

Zhou

et al. 2020

steel research int.

Self Cite

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“…This, coupled with the fact that FeMn alloys are less expensive, relatively abundant and non-toxic, makes them promising candidates for replacing Co-and Ni-based binder systems in ceramicmetallic composites (hardmetals and cermets). There have been attempts to develop wear resistant high-manganese WC-FeMn or WC-FeCrMn hardmetals [5][6][7][8][9][10][11][12] and W-free TiC-FeMn or TiC-FeCrMn [13][14][15][16][17][18][19][20][21] cermets. However, only few studies have directed attention to the fact that due to its high vapour pressure Mn is highly volatile at higher temperatures causing severe Mn loss through sublimation evaporation during vacuum sintering [6-9, 12,20,21].…”

Section: Introductionmentioning

confidence: 99%