Earticle

초록

영어

The high strength aluminium alloys exhibits low weldability due to poor solidification microstructure, porosity in the fusion zone and lose their mechanical properties when they are welded by fusion welding techniques. Friction stir welding (FSW) is a promising technique to retain the properties of the alloy as the joining take place in the solid state. Even though mechanical properties of the welds are better, corrosion resistance of welds gets affected by the microstructural changes that occur during welding. In the present work the effect of post weld treatments viz. peak ageing (T6), overaging (T73), retrogression and retrogression & reaging (RRA) on the mechanical properties and stress corrosion resistance is studied. It was observed that Retrogression and RRA treatments improved the resistance to stress corrosion cracking and maintained the mechanical properties. The resistance to stress corrosion is improved in RRA and Retrogression condition with the minimum loss of weld strength. This is attributed to the dissolution, re-precipitation and re-distribution of precipitates.

목차

Abstract
 1. Introduction
 2. Experimental Details:
 3. Results and Discussions
  3.1. Microstructure
  3.2. Hardness testing
  3.3. Tensile Testing
  3.4. Stress corrosion Cracking Tests
  3.5. Fractography
 4. Conclusions
 Acknowledgements:
 References

키워드

저자

• P. Vijaya Kumar [ Department of Mechanical Engineering, R.I.T., Visakhapatnam, India ]
• G. Madhusudan Reddy [ Defence Metallurgical Research Laboratory, Hyderabad, India. ]
• K. Srinivasa Rao [ K. Srinivasa Rao3 | Department of Metallurgical Engineering, Andhra University, Visakhapatnam, India ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of u- and e- Service, Science and Technology

• 간기

  격월간

• pISSN

  2005-4246

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605