1
$\begingroup$

After heating at 950°C and holding the temperature for 3 hours there is a soaking time that is provided for 12 hours. What is the soaking time being referred to here? A detailed reply to this will be very welcome.

$\endgroup$
2
2
$\begingroup$

At that high temperature , there are some things like carbides and intermetallics going into solid solution. Also some chemical homogenization ( which is similar to the solution). To a small degree the temperature is becoming more uniform ; although the surface has reached temperature the core of a thick component takes longer to reach temperature ; Usually addressed by typical ASME requirement by " one hour per inch of thickness". For a lower temperature like 500 C ,it would be time for stress relieving to develop , as in PWHT. That high temperature sounds like a solution anneal for a ferrous superalloy, followed by a fast cool. However 3 + 12 hours is exceptionally long in my experience.

$\endgroup$
1
  • $\begingroup$ Tip: You can also use HTML entities &Omega;, &mu;, &deg;, &times;, etc. as well as <sup>...</sup> and <sub>...</sub> in the posts (but they don't work in the comments). $\endgroup$
    – Transistor
    Mar 21 at 16:45

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.