JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Macro and Microscopic Investigation on Fracture Specimen of Alloy 617 Base Metal and Weldment in Low Cycle Fatigue Regime
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Macro and Microscopic Investigation on Fracture Specimen of Alloy 617 Base Metal and Weldment in Low Cycle Fatigue Regime
Kim, Seon Jin; Dewa, Rando Tungga; Kim, Woo Gon; Kim, Eung Seon;
  PDF(new window)
 Abstract
This paper investigates macro- and microscopic fractography performed on fracture specimens from low cycle fatigue (LCF) testings through an Alloy 617 base metal and weldments. The weldment specimens were taken from gas tungsten arc welding (GTAW) pad of Alloy 617. The aim of the present study is to investigate the macro- and microscopic aspects of the low cycle fatigue fracture mode and mechanism of Alloy 617 base metal and GTAWed weldment specimens. Fully axial total strain controlled fatigue tests were conducted at room temperature with total strain ranges of 0.6, 0.9, 1.2 and 1.5%. Macroscopic fracture surfaces of Alloy 617 base metal specimens showed a flat type normal to the fatigue loading direction, whereas the GTAWed weldment specimens were of a shear/star type. The fracture surfaces of both the base metal and weldment specimens revealed obvious fatigue striations at the crack propagation regime. In addition, the fatigue crack mechanism of the base metal showed a transgranular normal to fatigue loading direction; however, the GTAWed weldment specimens showed a transgranular at approximately to the fatigue loading direction.
 Keywords
Low Cycle Fatigue(LCF);Gas Tungsten Arc Welding(GTAW);Fracture Mode and Mechanism;Weldment;
 Language
Korean
 Cited by
 References
1.
Brooks, C. R. and Choudhury, A., 1993, "Metallurgical Failure Analysis," McGraw-Hill, pp. 1-409.

2.
Kim, W. G., Park, J. Y., Ekaputra, M. W., Hong, S. D., Kim, S. J. and Kim, Y. W., 2013, "Comparative Study on the High-Temperature Tensile and Creep Properties of Alloy 617 Base Metal and Weld metals," Journal of Mechanical Science and Technology, Vol. 27, No. 8, pp. 2331-2340. crossref(new window)

3.
Carroll, L. J., Cabet, C., Carroll, M. C. and Wright, R. N., 2012, "The Development of Microstructural Damage During High Temperature Creep-Fatigue of a Nickel Alloy," International Journal of Fatigue, Vol. 47, pp. 115-125.

4.
Totemeier, T. C. and Tian, H., 2007, "CreepFatigue Interactions in INCONEL 617," Materials Science and Engineering A, Vol. 468-470, pp. 81-87. crossref(new window)

5.
Burke, M. A. and Beck, C. G., 1984, "The High Temperature Low Cycle fatigue Behavior of the Nickel base Alloy IN-617," Metallurgical and Material Transactions A, Vol. 15A, pp. 661-670.

6.
Rao, K. B. S., Schiffers, H., Schuster, H. and Nickel, H., 1988, "Influences of Time and Temperature Dependent Processes on Strain Controlled Low Cycle Fatigue Behavior of Alloy 617," Metallurgical and Material Transactions A, Vol. 19A, pp. 359-371.

7.
Chen, X., Yang, Z., Sokolov, M. A., Erdmann III D. L. and Mo, K., 2014, "Effect of Creep and Oxidation on Reduced Fatigue Life of Ni-Based Alloy 617 at $850^{\circ}C$," Journal of Nuclear Materials, Vol. 444, pp. 393-403. crossref(new window)

8.
Wright, J. K., Carroll, J., Simpson, J. A. and Wright, R. N., 2013, "Low Cycle Fatigue of Alloy 617 at $850^{\circ}C$ and $950^{\circ}C$," Journal of Engineering Materials and Technology, Transactions of the ASME, Vol. 135, pp. 1-8.

9.
Carroll, L., Cabet, C. and Wright, R., 2010, "The Role of Environment on High temperature CreepFatigue Behavior of Alloy 617," Proceedings of the ASME 2010 Pressure Vessel and Piping Division Conference, PVP 2010, Washington, USA, pp. 1-10.

10.
Choi, P. H., Kim, S. J., Kim, W. G. and Kim, Y. S., 2014, "Fracture Behavior of Alloy 617 Base Metal and Weld Joints under Low Cycle Fatigue Loading," Proceedings of the KSPSE 2014 Spring Conference, pp. 68-69.

11.
Dewa, R. T., kim, S. J., Kim, W. G. and Kim, B. T., 2014, "Low Cycle Fatigue Properties of GTAWed Alloy 617 Weld Joints," Proceedings of the KSPSE 2014 Spring Conference, pp. 70-71.

12.
ASTM E606-92, 2002, "Standard Practice for Strain-Controlled Fatigue Testing," Annual Book of ASTM Standards, ASTM International.

13.
Totemeier, T. C., Tian, H., Clark, D. E. and Simpson, J. A., 2005, "Microstructure and Strength Characteristics of Alloy 617 Welds," INL/EXT-05-00488, Idaho National Laboratory, pp. 1-22.