Volume 20, Issue 5 (May 2020)
Modares Mechanical Engineering 2020, 20(5): 1099-1105 |
Back to browse issues page
Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
Sabokrouh M. Experimental Determination of the Normalizing Effect on Tensile Strength, Impact Strength, Fatigue, Residual Stress of Girth Welding on Iranian Natural Gas Transmission Pipelines. Modares Mechanical Engineering 2020; 20 (5) :1099-1105
URL: http://mme.modares.ac.ir/article-15-27051-en.html
URL: http://mme.modares.ac.ir/article-15-27051-en.html
Engineering Faculty, Mahallat Institute of Higher Education, Mahallat, Iran , msabokrouh@mahallat.ac.ir
Abstract: (2167 Views)
In this article, the effects of normalization heat treatment on girth weld with containing titanium oxide and titanium carbide microparticles (X-65 grade of the gas pipeline) were evaluated. The Charpy test results show that in the normalized sample containing titanium oxide microparticles and titanium carbide microparticles compared to the no heat treatment sample (containing titanium carbide microparticles and titanium carbide microparticles), has been respectively increased by 33% and 18%. Also, the ultimate strength of normalized samples containing titanium oxide microparticles and titanium carbide microparticles compared to the no heat treatment sample (containing titanium oxide microparticles and titanium carbide microparticles) has been increased by 9% and 11%, respectively. The results show that the fatigue life in both normalized micro-alloy samples has been increased. The fatigue life in the normalized sample of titanium carbide microparticles has increased more than the titanium oxide microparticles. The fatigue test results show that the fatigue life (150-N force) has been increased by 36% in the normalized sample containing titanium carbide microparticles compared to the normalized sample containing titanium oxide microparticles. In this loading, the fatigue life (normalized sample containing titanium carbide microparticles compared to the no heat treatment sample) has been increased by 27%. The hole-drilling strain-gage results show that in the normalized sample containing titanium oxide and titanium carbide microparticles, hoop residual stresses have been respectively decreased by 12% and 8%compared to the no heat treatment sample (containing titanium oxide microparticles and titanium carbide microparticles).
Article Type: Original Research |
Subject:
Welding
Received: 2018/11/10 | Accepted: 2019/09/17 | Published: 2020/05/9
Received: 2018/11/10 | Accepted: 2019/09/17 | Published: 2020/05/9
References
1. Prawoto Y, Mat Yajid MA, Lee KJ. Microstructura consideration on quantitative analysis of thermal treatment: Application to decarburization of steel. Journal of King Saud University-Engineering Sciences. 2013;25:141-147. [Link] [DOI:10.1016/j.jksues.2012.05.001]
2. de JesusJorge L, Scarpini Cândid V, Clay Rios da Silva A, da Costa Garcia Filho F, Camposo PereiraA, Santos da Luz F, et al. Mechanical properties and microstructure of SMAW welded and thermically treated HSLA-80 steel. Journal of Materials Research and Technology. 2018;7(4):598-605. [Link] [DOI:10.1016/j.jmrt.2018.08.007]
3. Wei S, Lu S. Effects of multiple normalizing processes on the microstructure and mechanical properties of low carbon steel weld metal with and without Nb. Materials & Design. 2012;35:43-54. [Link] [DOI:10.1016/j.matdes.2011.09.065]
4. Hashemi SH, Mohamaadyani D. Characterisation of weldment hardness, impact energy and microstructure in API X65 steel. International Journal of Pressure Vessels and Piping. 2012;98:8-15. [Link] [DOI:10.1016/j.ijpvp.2012.05.011]
5. Leggatt RH. Residual stresses in welded structures. International Journal of Pressure Vessels and Piping. 2008;85(3):141-151. [Link] [DOI:10.1016/j.ijpvp.2007.10.004]
6. Bose-Filho WW, Carvalho ALM, Strangwood M. Effect of alloying elements on the microstructure and inclusion formation in HSLA multipass welds. Materials Characterization. 2007;58(1):29-39. [Link] [DOI:10.1016/j.matchar.2006.03.004]
7. Bouchard PG. Validated residual stress profiles for fracture assessments of stainless steel pipe girth welds. International Journal of Pressure Vessels and Piping. 2007;84(4):195-222. [Link] [DOI:10.1016/j.ijpvp.2006.10.006]
8. Hashemi SH, Mohamaadyani D, Pouranvari M, Mousavizadeh SM. On the relation of microstructure and impact toughness characteristics of DSAW steel of grade API X70. Fatigue & Fracture of Engineering Materials & Structures. 2009;32(1):33-40. [Link] [DOI:10.1111/j.1460-2695.2008.01312.x]
9. Beidokhti B, Koukabi AH, Dolati A. Influences of titanium and manganese on high strength low alloy SAW weld metal properties. Materials Characterizatio. 2009;60(3):225-233. [Link] [DOI:10.1016/j.matchar.2008.09.005]
10. Beidokhti B, Koukabi AH, Dolati A. Effect of titanium addition on the microstructure and inclusion formation in submerged arc welded high strength alloy pipeline steel. Journal of Materials Processing Technology. 2009;209(8):4027-4035. [Link] [DOI:10.1016/j.jmatprotec.2008.09.021]
11. Chabok A, Dehghani K, Ahmadi Jazani M. Comparing the fatigue and corrosion behavior of nanograin and coarse-grain IF steels. Acta Metallurgica Sinica. 2014;28:295-301. [Link] [DOI:10.1007/s40195-014-0196-2]
12. Muszka K, Majta J, Damian Hodgson P. Modeling of the mechanical behavior of nanostructured HSLA steels. The Iron and Steel Institute of Japan. 2007;47(8):1221-1227. [Link] [DOI:10.2355/isijinternational.47.1221]
13. Wen XI, Mei Z, Li B, Zhang LC, Liu YZ. Effect of normalizing temperature on microstructure and mechanical properties of a Nb-V microalloyed large forging steel. Materials Science and Engineering: A. 2016;671:233-243. [Link] [DOI:10.1016/j.msea.2016.06.059]
14. Hashemi SH, Sabokrouh M, Farahani MR. Investigation of welding in multi-pass girth welding of thermomechanica steel pipe. Modares Mechanical Engineering. 2013;13(4):60-73. [Persian] [Link]
15. Sabokrouh M, Hashemi SH, Farahani MR. Experimental study of the weld microstructure properties in assembling of natural gas transmission pipelines. Proceedings of the Institution of Mechanical Engineers Part B: Journal of Engineering Manufacture. 2017;231(6):1039-1047. [Link] [DOI:10.1177/0954405415579581]
16. Sabokrouh M, Farahani MR. Experimental study of the residual stresses in girth weld of natural gas transmission pipeline. Journal of Applied and Computational Mechanics. 2019;5(2):199-206. [Link]
17. Sabokrouh M, Farahani MR. Simulation of the residual stresses distribution in girth weld of gas transmission pipeline. Modares Mechanical Engineering. 2019;19(1):223-228. [Persian] [Link]
18. Sabokrouh M, Farahani MR. Mathematical modeling of residual stress distribution in girth welding of high strength low alloy steel gas pipelines. Modares Mechanical Engineering. 2018;18(7):226-232. [Persian] [Link]
19. Sabokrouh M, khoshsima B. Experimental determination of the effect of titanium nanoalloy on mechanical properties of girth welding on Iranian natural gas transmission pipelines. Journal of Solid and Fluid Mechanics. 2018;8(3):213-219. [Persian] [Link]
Send email to the article author
| Rights and permissions | |
 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |