Tensile failure observed in Cast ASTM A494 Gr. CU5MCuC

[A M Contractor]

Dear #EdStainless

Heated to 1175° C, soaked for 2 Hrs, Water Quenched. Stabilizing to 970° C, soaked for 4 Hrs, Forced air cooled.

Results are not achieved. Please provide your valuable input.

 

[goutam_freelance]

As per SA-494 Clause 6 Note-1, heat treatment at higher temperature may be required.

 

[A M Contractor]

Dear Gautam

It is 2100° F in standard

 

[goutam_freelance]

It is minimum, can be increased.

 

[A M Contractor]

Ok. what do you suggest?

 

[goutam_freelance]

I am not a metallurgist. Please talk to your metallurgist whether the temperature can be increased.

 

[EdStainless]

My personal suggestion is;
Homogenize at 2200-2250F for 4-5 hours, cool to RT, then anneal at 2150-2175 and water quench.
Check the micro, and then stabilize, and check micro again.

 

[A M Contractor]

My personal suggestion is;
Homogenize at 2200-2250F for 4-5 hours, cool to RT, then anneal at 2150-2175 and water quench.
Check the micro, and then stabilize, and check micro again.

I am in process. I will update as soon as I get results. Thanks

 

[A M Contractor]

I am in process. I will update as soon as I get results. Thanks

Dear EdStainless

This is the micro structure after heating to 2210 F, cool to RT, annealed at 2150 F and water quench. Stabilizing at what temp will help me get results in this material?

 

[EdStainless]

I might try a lower stabilization temp such as 940-950C.
You will likely need a longer holding time but start at 4hrs.

https://re.public.polimi.it/retrieve/d3774420-d343-4255-8977-ffc9e376ca83/s40962-020-00519-x.pdf