Super Bainite METHODS

Step 1: Print

Parameters (MTU CNC Metal Printer): Spool Gun; Nozzle head needs to start 8-10mm away from the substrate; 5V; Wire Speed ~22 (level on feeder); RC25 gas @ 25 CFH

Pause in between layers to clean surface & allow to cool

Step 2: Machine

Remove part from substrate
Any further machining/finishing required to be at net shape

Step 3: Heat Treat

Encapsulate the part in quartz and evacuate the capsule. DO NOT BREAK CAPSULE UNTIL ENTIRE HT IS FINISHED
Homogenize in a high temperature furnace for 3 days at 1150C.
Allow to slowly cool in air after homogenization.
Austenitize at 1000C for 15 minutes
Immediately turn furnace down to 125C after austenitization and let the sample gently transition to the lower temperature
Cook the sample at 125C for 60 days
Remove from furnace, break the capsule open and quench the sample in water.

FOR THIS SUMMER

Remove capsule from furnace (#8, U208).
Quickly and carefully break the capsule and immediately quench the sample in water.
Rinse with ethanol and dry with air.
Place the sample on the first top cabinet on the right as you enter 517.
(Labeled Emily Hunt, Steel Samples)

May 5th through July 11th

Step 4: Characterize

Compression test
Hardness test
Metallography
SEM/XRD?

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Created	April 18, 2017 by Emily
Last edit	November 27, 2025 by StandardWikitext bot
Cite as	Ejhunt (2017–2025). "Super Bainite METHODS". Appropedia. Retrieved June 4, 2026.
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