Journal of Welding and Joining
- Volume 11 Issue 1
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- Pages.2-8
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- 1993
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- 2466-2232(pISSN)
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- 2466-2100(eISSN)
Weldability of Al Alloys, Part II :HAZ Cgaracteristics
알루미늄 합금의 용접특성 - part II
Abstract
A literature review was conducted to gather informations available on the welding metallurgy of aluminum alloys, emphasized on characteristics in the heat affected zone(HAZ). Nominal metallurgical reactions that occur in aluminum alloys provide a basis for understanding aluminum welding metallurgy. However, welding reactions differ to some extent because of the relatively short times involved, and the non-isothermal heating excursed. For non-heat treatable alloys, welding primarily affects these alloys by annealing (recrystallization and growth) and to a less extent, changes in low temperature precipitates. In the case of heat treatable alloys, the resulting HAZ properties depend upon alloy composition, starting temper, heat input and post weld heat treatments.
Keywords
- heat affected zone;
- precipitation hardening;
- reversion thermal cycle;
- natural and artificial aging;
- liquation