Al 7075 합금의 마찰교반용접 용접성연구

• 영문명: A Weldability of Al 7075 Alloy Welded by Friction Stir Welding
• 발행기관: 한국산업기술융합학회(구. 산업기술교육훈련학회)
• 저자명: 백양선(Yang-Seon Beak)
• 간행물 정보: 『산업기술연구논문지』산업기술교육훈련논문지 제16권 4호, 195~202쪽, 전체 8쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2011.12.30

영문 초록

Among light alloys, compound metal of aluminum has been applied widely on account of light weight and specific strength, but the aluminum alloy can bring about deformation by welding heat and defects such as porosity and crack easily in case of manufacturing structure by melting welding. In addition, intensity of joint can be deteriorated easily, so new technology is demanded. In 1981, TWI developed Friction Stir Welding, non-melting progress and this progress has been expanded into various industries widely. FSW technology, originated from friction welding, is in the limelight of a welding method which causes little deformation, is non-consumable, and supplies high quality joint without welding defection, fume, noise and harmful light. In this study, principle and characteristics of FSW with Al 7075 alloy among various aluminum alloys are investigated and analyzed by using technical characteristics of FSW as a new method which can solve the problem of melting welding of aluminum alloy. The experiment is carried out with Al 7075 made by ALCOA EUROPE with thickness of 8mm, tool which ㎜ has pins 7.5㎜ in length with stirring speed for 400, 600, 800 rpm with welding speed for 2, 1㎜/sec. 6 specimen was produced after friction welding experiments, changing each condition. After welding experiments, macroscopic test, tensile strength, and hardness are investigated and analyzed.

목차

Ⅰ. 서 론

Ⅱ. 시편 및 실험방법

Ⅲ. 실험결과 및 고찰

Ⅳ. 결 론

키워드

Friction Stir Welding(마찰교반용접) Hardness Test(경도시험) Tensile Strength(인장강도) Yield Strength(항복강도) Elongation Rate(연신율)