As welded aluminum - over time
As welded aluminum - over time
(OP)
All,
The mechanical properties of aluminum near a weld are typically taken substantially lower than away from the weld in design. I am talking about the base metal near the welded zone, not the actual filler metal. Do these as-welded values change over time?
i.e. 6061 T6 has a yield strength of around 35 ksi, but near the weld, it has a yield strength of 16 ksi. Does the 16 increase over time, like 25 yrs later for example? Is there a reference for these "aged" values?
tg
The mechanical properties of aluminum near a weld are typically taken substantially lower than away from the weld in design. I am talking about the base metal near the welded zone, not the actual filler metal. Do these as-welded values change over time?
i.e. 6061 T6 has a yield strength of around 35 ksi, but near the weld, it has a yield strength of 16 ksi. Does the 16 increase over time, like 25 yrs later for example? Is there a reference for these "aged" values?
tg






RE: As welded aluminum - over time
There are some kinds of naturally ageing aluminium alloys (naturally as in room temperature, no heat treatment), that - in combination with specific filler alloys, regain their strength after time (from 2 days to much longer).7xxx-T6 comes to mind.
I have some references, but no actual experience. As this is a rather wide or open question, you might be more specific in order to get specific responses.
RE: As welded aluminum - over time