The Paton Welding Journal, 2006, №11

2006 №11 (04)

2006 №11 (06)

---

The Paton Welding Journal, 2006, #11, 22-26 pages

Abrasive wear behaviour of Fe-Cr-C overlays

K.B. Shah¹, S. Kumar¹, D.K. Dwivedi²

¹National Institute of Technology, Hamirpur, India
²Indian Institute of Technology, Roorkee, India

Abstract
Present paper describes the influence of number of passes on abrasive wear resistance of Fe-Cr-C hardfacing on mild steel. Overlays were deposited by a gas metal arc (GMA) welding processes using a commercially available surfacing electrodes of 4.0 mm diameter. Overlays were deposited using welding current of 160 A. One, two and three pass coatings were developed using DCSP at constant welding speed of 15 cm/min. The abrasive wear resistance of overlays was evaluated on a pin on disc system against a 320 grade SiC abrasive medium at two normal loads of 2 and 10 N. Wear pin of 6 x 6 x 20 mm size was used for abrasive wear test. Optical microscopy was used to study the microstructure of overlays. SEM studies of wear surface were carried out to analyze the wear mechanism. Increase in number of welding passes increases the abrasive wear. Variation in the hardness across the interface was noticed.
Keywords: chromium carbide, welding current, number of passes, microstructure, abrasive wear, micro-cutting, hardness, dilution, overlays

References

1. Ghosh, P.K., Kaushal, O.P., Sharma, S.K. (1992) ISIJ, 32(2), 250.
2. Chatterjee, S., Pal, T.K. (2003) Wear, 255(1), 417–425.
3. Su, Y.L., Chen, K.Y. (1997) Ibid., 209, 160–170.
4. Dwivedi, D.K. (2004) Surface Eng., 20(2), 87–92.
1. Dwivedi, D.K. (2004) Materials Sci. and Technology, 20(10), 132
2. Berns, H., Fischer, A. (1997) Materials Characterization, 39(2/5), 11, 499–527.
3. Dasgupta, R., Prasad, B.K., Jha, A.K. et al. (1997) Ibid., 209(1), 255–262.
4. Dasgupta, R., Thakur Rashmi, Yadav, M.S. et al. (1999) Ibid., 236(1), 368–374.
5. Lee, K., Lee, S.H., Kim, Y. et al. (2003) Ibid., 255(1), 481–488.
6. Dwivedi, D.K. ISIJ (accepeted).
7. Jha, A.K., Prasad, K., Dasgupta, R. et al. J. Materials Eng. and Performance, 8(2), 190–196.
8. Jha, A.K., Gachake, A., Prasad, B.K. et al. (2002) Ibid., 11(1), 37–45.
9. Dasgupta, R., Prasad, B.K., Jha, A.K. et al. (1998) Materi¬als Transact. JIM, 39(12), 1191–1196.
10. Kumar, S., Mondal, D.P., Khaira, H.K. et al. (1999) J. Materials Eng. and Performance, 8(6), 711–715.
11. Colaco, R., Vilar, R. (2003) Wear, 255(1/6), 643–650.
12. Buytoz, S., Mustafa, M., Eren, H. Materials Letters (in press).
13. Francis, J.A. (2002) Sci. and Techn. of Welding and Joining, 7(5), 331–338

---

Suggested Citation

K.B. Shah, S. Kumar, D.K. Dwivedi (2006) Abrasive wear behaviour of Fe-Cr-C overlays. The Paton Welding J., 11, 22-26.

---