Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
권호 표지
DOI QR코드

DOI QR Code

Effects of Welding Condition on Hardness and Microstructure of Friction Stir Welded Joints of AI-7075-T651 Plate

용접조건이 AI-7075-T651의 마찰교반용접부의 경도와 미세조직에 미치는 영향

  • Received : 2010.12.14
  • Accepted : 2011.01.12
  • Published : 2011.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

As well known, the friction stir welding is a novel welding process which is a solid state welding process for sheet or plate using the friction stir phenomenon. This paper describes the effect of welding condition such as the rotation speed and the travelling speed during the friction stir welding process on the micro Virkers hardness and the microstructure of friction stir welded joints in AI-7075-T651 plate. From those investigations, the highest hardness of stir zone was observed at the welding condition of SO-3. The microstructures of the friction stir welded joints was not dependent on the welding conditions, but in the SO-4 specimen, the friction stir welding defect like tunnel shape was found in stir zone.

Keywords

References

  1. Thomas, W.M., Nicholas, E.D., Needham, J.C., Murcg, M.G., Templesmith, P. and Dawes, C.J., 1991, "Friction Stir Butt Welding", International patent Application No. PCT/GB92/02203 and GB Patent Application No. 9125978.8, Dec. 1991, U>S> Patent No. 5,460,317, Oct. 1995.
  2. 마찰압접협회, 2006, "마찰접합기술", 일간공업신문사(일서).
  3. 김미선, 2009, "국내 마찰(교반) 설비산업의 현황과 전망은?", 용접저널, 8월호, pp. 51-62.
  4. Mahoney, M.W., Rhodes, C.G., Flintoff, J.G., Spurling, R.A. and Bingel, W.H., 1997, "Properties of Friction-Stir-Welded 7075 T651 Aluminum", Metallurgical and Materials Transactions Vol. 29A, pp. 1955-1964.
  5. Shinoda, T. and Kondo, Y, 1997, "Friction Stir Welding of Aluminum Plate", Welding International, Vol. 11-3, pp. 179-184. https://doi.org/10.1080/09507119709451948
  6. Sato, Y.S., Kokawa, H., Ikeda, K., Enomoto, M., jogan, S. and Hashimoto, T., 2001, "Microtexture in Friction Stir weld of an Aluminum Alloy", Metallurgical and Materials Trans. Vol. 32A, pp. 941-948.
  7. Fuller, C.B., Manohney, M.W., Calabrese, M. and Micona, L, 2010, "Evolution of Microstructure and Mechanical Properties in Naturally Aged 7075 and 7075 Al Friction Stir Welds", Materials Science and Engineering A527, pp. 2233-2240.
  8. Hatamleh, O., Forth, S. and Reynolds, A.P., 2010, "Fatigue Crack Growth of Peened Friction Stir-Welded 7075 Aluminum Alloy Different Load Ratios", J. of Mat. Eng. Performance, Vol. 19, PP. 99-106. https://doi.org/10.1007/s11665-009-9439-1
  9. 이창용, 김선규, 이원배, 장응성, 연윤모, 정승부, 2004, "7075 알루미늄 합금의 마찰교반용접특성", 대한용접학회2004년도 춘계 학술대회발표논문, pp. 159-161
  10. 연윤모, 이원배, 정승부, 2001, "알루미늄 합금의 마찰교반용접부의 미시조직과 특성", 대한용접학회지, pp. 159-161.
  11. 장석기, 한민수, 전정일, 2007, "AI7075-T651의 마찰교반 용접에 대한 회전속도와 이송속도의 영향", 대한 기계학회논문집 A권, 제 31권, 제 4호, pp. 532-539.
  12. 김치옥, 김선진, 2010, "용접조건이 AI-7075-T651의 마찰교반용접부의 인장 특성에 미치는 영향", 한국동력기계공학회지, 제 15권 제 2호, pp. 61-68.

Cited by

  1. A Study on the Performance Evaluation of the Welded Joint to Maintain the Quality of the Tandem GMAW vol.39, pp.3, 2015, https://doi.org/10.5916/jkosme.2015.39.3.230
  2. Thermal and mechanical analysis on friction stir welding of AZ31 magnesium alloy by the finite element method vol.17, pp.4, 2013, https://doi.org/10.9726/kspse.2013.17.4.064
  3. Statistical aspects of fatigue crack growth life of base metal, weld metal and heat affected zone in FSWed 7075-T651 aluminum alloy vol.28, pp.10, 2014, https://doi.org/10.1007/s12206-014-0906-8
  4. Marco and Microscopic Observations of Fatigue Crack Growth in Friction Stir Welded 7075-T651 Aluminum Alloy Plates vol.18, pp.2, 2014, https://doi.org/10.9726/kspse.2014.18.2.062
  5. Statistical Distribution of Fatigue Crack Growth Rate for Friction Stir Welded Joints of Al7075-T651 vol.17, pp.4, 2013, https://doi.org/10.9726/kspse.2013.17.4.086
  6. Effect of Specimen Orientation on Fatigue Crack Growth Behavior in Friction Stir Welded Al7075-T651 Joints vol.38, pp.12, 2014, https://doi.org/10.3795/KSME-A.2014.38.12.1317
  7. Friction Stir Welding of 7075-T651 Aluminum Plates and Its Fatigue Crack Growth Property vol.35, pp.10, 2011, https://doi.org/10.3795/KSME-A.2011.35.10.1347
  8. 일정 응력확대계수범위 제어 시험하의 마찰교반용접된 7075-T651 알루미늄 합금 용접부의 피로균열전파 거동의 실험적 고찰 (LT 방향의 시험편에 대하여) vol.37, pp.6, 2011, https://doi.org/10.3795/ksme-a.2013.37.6.775