Browse > Article
http://dx.doi.org/10.5695/JKISE.2010.43.5.230

Surface Modification of AC4A Aluminum Alloy Castings Using Friction Thermomechanical Process  

Yoon, Tae-Wook (Pyung Hwa Oil-seal Industry Co., Ltd.)
Ko, Young-Bong (Korea Testing & Research Institute)
Ko, Byung-Chun (Materials Science and Metallurgical Engineering of Kyungpook National University)
Park, Kyeung-Chae (Materials Science and Metallurgical Engineering of Kyungpook National University)
Publication Information
Journal of the Korean institute of surface engineering / v.43, no.5, 2010 , pp. 230-237 More about this Journal
Abstract
FTMP(friction thermo-mechanical process) is an adaptation of friction stir welding, and can be used as a generic process to modify the microstructure at selective locations. In this study, in order to analyze characteristics of surface modification of ACA4 castings by FTMP, change of rotating speed(R/S) and traveling speed(T/S) of tool were applied as conditional parameter. Analysis of microstructure, hardness, surface roughness and depth of modified zone(MZ) were searched. The best condition were obtained at R/S 600 rpm and T/S 100 mm/min. At this time, hardness was 82 HV, the surface roughness was 0.07 mm and the depth at MZ was 1.72 mm. Free defects microstructure and fine Si particles formation and strong forging effects were analyzed at MZ.
Keywords
Friction Thermo-mechanical Process(FTMP); Surface modification; AC4A aluminum alloy castings; Modified zone; Si particle size; Hardness distribution;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 篠田 剛, 摩擦攪拌接合 FSWのすべて. 日本:社法人溶接, (2003) 189.
2 박재철, 김성종, 한국표면공학회 2009년도 춘계학술대회논문집, (2009) 242.
3 권용재, 대한용접 접합학회지, 25(3) (2007) 6.   과학기술학회마을
4 권용재, 대한용접 접합학회지, 26(6) (2008) 18.
5 Y. J. Kwon, I. Shigematsu, N. Saito, J. Japan Inst. METALS, 66 (2002) 1325.   DOI
6 Y. J. Kwon, I. Shigematsu, N. Saito, Mater. Lett., 62 (2008) 4458.   DOI
7 고영봉, 이중헌, 박경채, 대한용접 접합학회지, 27(6) (2009) 595.
8 박재철, 김성종, 한국표면공학회지, 42(1) (2009) 13.   과학기술학회마을
9 장웅성, 김흥주, RIST 연구논문, 18(1) (2004) 30.