Volume 8, Issue 4 (december 2011)                   IJMSE 2011, 8(4): 27-33 | Back to browse issues page

XML Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
A. Mohassel, A. H. Kokabi, P. Davami. MECHANICALAND METALLURGICAL PROPERTIES OFWIDE-GAP ALUMINOTHERMIC RAILWELDS. IJMSE 2011; 8 (4) :27-33
URL: http://ijmse.iust.ac.ir/article-1-387-en.html
MECHANICALAND METALLURGICAL PROPERTIES OFWIDE-GAP ALUMINOTHERMIC RAILWELDS
A. Mohassel , A. H. Kokabi , P. Davami
Abstract:   (46413 Views)
The wide-gap aluminothermic rail welds with root opening of 50-70 mm were produced using plain carbon steel rail and non-alloy aluminothermic charge. Mechanical properties and micro-structure of the weld metal and HAZ as well as the impact energy and the fracture toughness of the welds were investigated. The yield and tensile strength of wide-gap welds were about 98% and 95% of the base metal, respectively. Both minimum and maximum hardnesses of the joint were seen in HAZ which were related to the grain coarsening and normalizing, respectively. The mean value of wide-gap weld fracture toughness is more than narrow-gap weld. Moreover, trans-granular cleavage indicated the brittle fracture mode of the weld metal.
Keywords: Wide-gap weld, Aluminothermic weld, Fracture toughness, Microstructure.
Full-Text [PDF 2133 kb]   (6615 Downloads)    
Type of Study: Research Paper |
Add your comments about this article : Your username or Email:
CAPTCHA
Send email to the article author

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2022 All Rights Reserved | Iranian Journal of Materials Science and Engineering

Designed & Developed by : Yektaweb