2017-Sustainable Industrial Processing Summit
SIPS 2017 Volume 8: Surfaces and Interfaces(SISAM), Composite, Ceramic and Nanomaterials
| Editors: | Kongoli F, Braems I, Demange V, Dubois JM, Pech-Canul M, Patino CL, Fumio O |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2017 |
| Pages: | 249 pages |
| ISBN: | 978-1-987820-75-1 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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TaC-Containing Ti(CN)-WC-Ni/Co Cermets for the Improved Machining Performance
Vikas Verma1; B. V. Manoj Kumar2;1, ROORKEE, India; 2IIT ROORKEE, ROORKEE, India;
Type of Paper: Regular
Id Paper: 206
Topic: 18
Abstract:
Present research deals with the study of cutting forces and dominant crater wear mechanisms responsible for material removal from the cutting edge of TaC-containing Ti(CN)-WC-Ni/Co based cermet tools during machining. TiCN based cermet compositions Ti(CN)-5WC-20Ni and Ti(CN)-5WC-10Ni-10Co-5TaC (in wt.%) processed via conventional sintering and SPS were selected for turning operations performed for 0.5 mm/rev feed rate and 0.9 mm depth of cut at 133 rpm for 180 sec and 435 rpm for 60 sec against 304 stainless steel rod and results were compared with commercially available cemented carbide tip (CCT) tool. Representative images of polished surfaces of sintered cermets revealed core rim morphology. The size and the frequency of the carbide size appear to differ with the cermet composition and processing technique in the SEM (BSE) images of the processed cermets. Higher cutting forces resulted at lower speed compared to higher speed. At lower speed, cutting edge of the tool tends to plough into workpiece surface to a larger extent and as the cutting speed increases, cutting becomes steady with a consequent reduction in the cutting force. Among the investigated tool materials, lower cutting force is observed in SPSed Ti(CN)-5WC-10Ni-10Co-5TaC cermet. The worn tool surface of conventional Ti(CN)-5WC-20Ni cermet showed cracks, grain pull-out and fracture at 133 rpm, while the intensity of crack, grain pull-out, and fracture increased at 435 rpm. Hard asperities or wear particles act as sharp indenters and generate cracks, which on further propagation and intersection lead to grain pull-outs on the cermet tool surface. Worn tool surface of conventionally sintered and SPSed Ti(CN)-5WC-10Ni-10Co-5TaC cermet revealed increased resistance against crack or fracture. Presence of adhered layer beneath the tool face of SPSed Ti(CN)-5WC-10Ni-10Co-5TaC cermet protected the tool from getting damage by continous rubbing during machining. Worn surfaces of cemented carbide tip tool revealed deeper abrasion and grain pull-out at 435 rpm. Ploughing harder tungsten oxide into the workpiece during machining led to deeper abrasion.
Keywords:
Cermets; Ti(CN); TaC; Conventional; SPS; TurningReferences:
[1] S. Zhang: Titanium carbonitride-based cermets: processes and properties, Materials Science and Engineering: A, 163 (1993), 141-148[2] P. Ettmayer, H. Kolaska, W. Lengauer and K. Dreyer: Ti(C,N) Cermets – metallurgy and properties, International Journal of Refractory Metals and Hard Materials, 13 (1995), 343-351
[3] Vikas Verma and B. V. Manoj Kumar: Tribological characteristics of conventionally sintered TiCN-WC-Ni/Co cermets against cemented carbide, Ceramics International, 43 (2016), 368-375
[4] Vikas Verma, B. V. Manoj Kumar and Shinhoo Kang: Sliding wear behavior of TaC-containing Ti(CN)-WC-Ni/Co cermets. International Journal of Applied Ceramic Technology, 13 (2016); 1033-1042
[5] Vikas Verma and B. V. Manoj Kumar: Sliding wear behavior of SPS processed TaC containing Ti(CN)-WC-Ni/Co cermets against silicon carbide, Wear, 376-377 (2017), 1570–1579
[6] S. Y. Ahn and S. Kang: Effect of various carbides on the dissolution behavior of Ti(C0.7N0.3) in a Ti(C0.7N0.3)-30 Ni system, International Journal of Refractory Metals & Hard Materials, 19 (2001), 539-545
[7] G. E. D’Errico, S. Bugliosi, D. Cuppiui and E. Guglielmi: A study of cermets’ wear behavior, Wear, 203-204 (1997), 242-246
[8] H. Pastor: Titanium-carbonitride-based hard alloys for cutting tools, Material Science and Engineering A, 105-106 (1988), 401-409
[9] S. Zhang: Material development of titanium carbonitride based cermets for machining applications, Key Engineering Materials, 138-140 (1997), 521-544
[10] V. Verma and B. V. Manoj Kumar: Effects of binders (Ni-Co) and Ternary Carbide (TaC) on Friction and Wear Behavior of Ti(CN) Based Cermets, Ceramic Transactions, CCLXIII (2017), 353-364
[11] G. Byrne and E. Scholta: Environmentally clean machining processes - a strategic approach, CIRP Annals - Manufacturing Technology, 42 (1993), 471-474
[12] P. S. Sreejith and B. K. A. Ngoi. Dry machining: machining of the future, Journal of Materials Processing Technology, 101(2000), 287-291
[13] H. Thoors, H. Chandrasekaran and O. Patrik: Study of some active wear mechanisms in a titanium-based cermet when machining steels, Wear, 162-164 (1993), l-11
[14] B.V. Manoj Kumar, J. Ram Kumar and B. Basu: Crater wear mechanisms of Ti(CN)–Ni–WC cermets during dry machining, International Journal of Refractory Metals and Hard Materials, 25 (2007), 392-399
[15] A. Bellosi, R. Calzavarini, M. G. Faga, F. Monteverde, C. Zancolo and G. E. D’Errico: Characterisation and application of titanium carbonitride-based cutting tools, Journal of Materials Processing Technology, 143-144 (2003), 527-532
[16] E. M. Trent and P. K. Wright, Metal cutting, Butterworth/ Heinemann, Oxford, 2002; ISBN 0-7506-7069-X
[17] M. Nouari and A. Ginting: Wear characteristics and performance of multi-layer CVD-coated alloyed carbide tool in dry end milling of titanium alloy, Surface & Coatings Technology, 200 (2006), 5663-5676
[18] Z. M. Shi, Y. Zheng and W. J. Liu: Wear mechanism of Ti(C, N)-based cermet cutting tools in the machining of normalized medium carbon steel AISI1045, Key Engineering Materials, 353-358 (2007), 792-795
[19] A. A. Khan and S. S. Hajjaj: Capabilities of cermets tools for high speed machining of austentic stainless steel, Journal of Applied Sciences, 6 (2006), 779-784
[20] A. Senthil Kumar, A. Raja Durai and T. Sornakumar: Machinability of hardened steel using alumina based ceramic cutting tools, International Journal of Refractory Metals & Hard Materials, 21 (2003), 109-117
[21] Brandt G: Flank and crater wear mechanisms of alumina based cutting tools when machining steel. Wear, 112 (1986), 39–56
[22] G. Ostberg, K. Buss, M. Christensen, S. Norgren, H. O. Andrena, D. Mari, G. Wahnstrom and I. Reineck: Effect of TaC on plastic deformation of WC–Co and Ti(C,N)–WC–Co, International Journal of Refractory Metals & Hard Materials, 24 (2006), 145-154
[23] Vikas Verma and B. V. Manoj Kumar: Processing of TiCN–WC–Ni/Co Cermets via Conventional and Spark Plasma Sintering Technique, Transactions of the Indian Institute of Metals, 70 (2017), 843-853
[24] U. Rolander, G. Wein, and M. Zwinkels: Effect of Ta on structure and mechanical properties of (Ti,Ta,W)(C,N)-Co cermets, International Journal of Refractory Metals & Hard Materials, 19 (2001), 325–328
[25] D. J. Rowcliffe and W. J. Warren: Structure and properties of tantalum carbide crystals, Journal of Materials Science, 5(1970), 345-350
[26] D. J. Rowcliffe and G. E. Hollox: Plastic flow and fracture of tantalum carbide and hafnium
carbide at low temperatures, Journal of Materials Science, 6(1971), 1261-1269