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A Study on the Properties in Friction Weldability of Ni-Cr-Mo and SM45C  

Lim, Hyung-Taek (충남대학교 대학원 기계공학과)
Min, Taeg-Ki (충남대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.16, no.6, 2007 , pp. 29-36 More about this Journal
Abstract
The present study examined the mechanical properties of the friction welding of Ni-Cr-Mo to SM45C. Friction welding was conducted at welding conditions of 2,000 rpm, friction pressure of 100MPa, friction time of 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0 seconds, upset pressure of 150MPa, and upset time of 3.0 seconds. When the friction time was 1.6 seconds, the maximum tensile strength of the friction weld happened to be 1,020MPa, which is 120% of the base material's tensile strength(850MPa). At the same condition, the maximum shear strength was 438MPa, which is equivalent to 103% of the base material's shear strength(425MPa). At the same condition, the maximum vickers hardness was Hv490 at Ni-Cr-Mo nearby weld interface, which is higher Hv40 than condition of the friction time 0.8 seconds, and the maximum vickers hardness was Hv305 from weld interface of SM45C, which is higher Hv12 than condition of the friction time 0.8 seconds. The results of microstructure analysis show that the structures of two base materials have fined and rearranged along a column due to heating and axial force during friction, which has affected in raising hardness and tensile strength.
Keywords
Friction welding; Friction time; Friction pressure; Tensile strength; Ni-Cr-Mo; SM45C;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Nicholas, E. D., 1997, 'Where Industry Uses Friction Welding,' Welding Design and Fabrication, Aug., pp. 74-76
2 Toms, H. H., 1962, 'Properties of Friction Welds between and Dissimilar Metals,' Welding Research Supplement, Oct. pp. 448-450
3 Vill, V. I., 1957, 'Friction Welding of Metals,' Svarochne Proizvodstvo, Vol. 3, No. 9, pp. 8-23
4 Park, K. H., Min, T. K., Yoon, Y. J. and Park, C. S., 2006, ' A Study on the Joint Properties accoding to the Friction Welding Area Change of Carbon Steel(SM45C),' Transaction of KSMTE, Vol. 15, No.1, pp. 102-107   과학기술학회마을
5 Lee, S. Y. and Yun, B. S., 2001, 'Heat Transfer Analysis of Friction Welding of A2024 to SM45C,' Transaction of KSMTE, Vol. 10, No. 1, pp. 65-70
6 Min, T. K., 1992, Properties of Friction Welding Between the Back Metal of Bushing Part and Flange Part in A-Sn Alloy Metal Bearing, Dong-A University, Busan, Korea, pp. 4-5
7 Spindler, D. E., 1994, 'What Industrial Needs to Know about Friction Welding,' Welding Journal, Mar, pp. 37-42