Structure and Properties of the Surface Layer of a Wear-Resistant Coating on Martensitic Steel after Electron-Beam Processing

Abstract:

The paper reports electro-contact welding on Hardox 450 steel with С-V-Cr-Nb-W flux-cored wire. Supplementary irradiation by intense pulsed electron beam was carried out to improve mechanical properties. Micro-and nanohardness, Young modulus and tribological parameters of the modified surface were tested mechanically. It is pointed at the significant increase in the friction coefficient because the surface layer fractures and particles of the surfaced layer are involved in the process of friction. Using the methods of optical and scanning microscopy a great number of micro-pores were detected both on the irradiated surface and through the surfaced layer modified by intense pulsed electron beam. It is demonstrated that electron-beam processing of the deposited layer surface is the reason for occurrence of multi-layer structure. According to measurements it was determined that the modified (surface and transition) layers are 0.3 to 0.5 μm on overage. It was also found out that irradiation of the surfaced metal leads to significant refining of structural elements because of ultrahigh speeds of crystallization and further cooling down of the modified layer. The phase composition of the surfaced metal modified by pulsed electron beam is explored. Niobium carbide (NbC) is reported to form in the surface layer.

• Periodical: Materials Science Forum (Volume 906)
• Pages: 101-106
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.906.101
• Online since: September 2017
• Authors: Sergey Konovalov*, V.E. Kormyshev, Yu.F. Ivanov, Victor Gromov, I.A. Komissarova
• Keywords: Layer, Properties, Steel, Structure

References

[1] Deuis R L, Yellup J M and Subramanian C 1998 Composites Science and Technology 58 (2) 299-309.

DOI: 10.1016/s0266-3538(97)00131-0

[2] Volovitch P, Masse J E, Fabre A, Barrallier L and Saikaly W 2008 Surface and Coatings Technology 202(20) 4901-4914.

DOI: 10.1016/j.surfcoat.2008.04.052

[3] Mulungye R M, Owende P M O, Mellon K 2007 Materials and Design 28 (3) 739-756.

DOI: 10.1016/j.matdes.2005.12.006

[4] Iakovou R, Bourithis L and Papadimitriou G 2002 Wear 252(11-12) 1007-1015.

DOI: 10.1016/s0043-1648(02)00056-x

[5] Agarwal A and Dahotre N B 1999 Journal of Materials Engineering and Performance 8(4) 479-486.

[6] Ozguney A T 2007 Optics and Laser Technology 39(5) 1054-1058.

[7] Yan M and Zhu W Z 1997 Surface and Coatings Technology 91(3) 183-191.

[8] Lorenzin G and Rutili G 2009 Welding International 23(8) 622-632.

[9] Lei Y-c, Zhang Z, Nie J. -j, Chen X. -z 2008 Transactions of Nonferrous Metals Society of China (English Edition) 18 (4) 809-813.

[10] Chen X, Fang Y, Li P, Yu Z, Wu X and Li D 2015 Materials and Design 65 1214-1221.

[11] Fang Y, Chen X, Madigan B, Cao H and Konovalov S 2016 Fusion Engineering and Design 103 21-30.

[12] Selyanin I F, Drobyshev A N, Deev V B, Feoktistov A V and Kutsenko AI 2004 Izvestiya Vysshikh Uchebnykh Zavedenij. Chernaya Metallurgiya 8 31-34.

[13] Gromov V E, Vorobiev S V, Konovalov S V, Romanov D A, Ivanov Y F, Semina O A and Kazimirov S A 2016 Journal of Surface Investigation 10 (1) 83-87.

[14] Koval' N N and Ivanov Yu F 2008 Russian Physics Journal 51(5) 505-516.

[15] Halbauer L, Zenker R, Weidner A, Buchwalder A and Biermann H 2016 Steel Research International 87 (4) 436-444.

DOI: 10.1002/srin.201500086

[16] Ozur G E, Proskurovsky D I and Rotshtein V P 2016 Technical Physics Letters 42(3)328-331.

[17] Shiratori H, Fujieda T, Yamanaka K, Koizumi Y, Kuwabara K, Kato T and Chiba A 2016 Materials Science and Engineering A 656 39-46.

DOI: 10.1016/j.msea.2016.01.019

[18] Bataev I A, Mul D O, Bataev A A, Lenivtseva O G, Golkovski M G, Lizunkova Y S and Dostovalov R A 2016 Materials Characterization 112 60-67.

DOI: 10.1016/j.matchar.2015.11.028

[19] Grishunin V A, Gromov V E, Ivanov Y F, Teresov A D and Konovalov S V 2013 Journal of Surface Investigation 7 (5) 990-995.

[20] Konovalov S V, Kormyshev V E, Ivanov Y F and Teresov A D 2016 Letters on Materials 6(4) 350-354.

[21] Ivanov Y, Gromov V, Kormyshev V, Konovalov S, Kapralov E and Semin A 2016 AIP Conference Proceedings 1783 020077.

DOI: 10.1063/1.4966370

[22] Konovalov S V, Kormyshev V E, Gromov V E, Ivanov Y F, Kapralov E V and Semin A P 2016 Journal of Surface Investigation 10 (5) 1119-1124.

[23] Bannich O A, Budberg P B and Alisova S P 1986 The diagrams of binary and multicomponent systems based on iron (Moscow, Metallurgy).

[24] Lyakishev N P 2000 The diagrams of binary metallic systems (Moscow, Mashinostroenie).