Different martensites? 3

[Greenleader]

I am aware of a few different types of martensite, but I have run across some lately, that I am not familiar with.
Could someone please direct me to a single source, with a list and description of all types of martensitic structures?
Thank you in advance, Gerald

 

[swall]

What does this martensitic structure look like? What is the alloy and heat treat?

 

[Greenleader]

Actually names like "tweed", "virgin martensite", "alpha", "beta", "lath", "plate", etc. I'm dealing with ferrous metals here, and am getting somewhat confused as to the many different martensites. Is there a comprehensive list, with their respective properties some where? Gerald

 

[metengr]

Greenleader;
If you want to obtain this information, I would suggest visiting the web site below;

http://www.msm.cam.ac.uk/phase-trans/index.html

Dr Harry Bhadeshia is one of the leading authorities on phase transformation.

Another good source of information is the following;

Physical Metallurgy Handbook by Anil Sinha. He provides an excellent discussion on morphologies of martensite.

 

[Greenleader]

Thanks metenger.

Do you know if Sinha's work is available on line? Thanks again, Jerry

 

[metengr]

No, not that I am aware of. I purchased the book, and use it often. I would suggest you email Dr Bhadeshia. From what I have read, he answers his emails and may be able to provide you with some additional information. If this doesn't pan out, you can invest in the Handbook.

 

[swall]

Another good book is "Light Microscopy of Carbon Steels", by L.E. Samuels, available from ASM. He talks about plate and lath martensite formation and shows examples of the structures. Very comprehensive.He performs documented heat treat procedures and shows the microstructures after various modifications to the original heat treat schedule.

 

[Greenleader]

Thanks swall.

That is a lot like what I had in mind. Sort of a "martensite cook book". Jerry

 

[Carburize]

If you can get hold of a copy of "The Microstructure of Steels" by R W K Honeycombe. Published in Special Report 80 by the Iron and Steel Institute London in 1963- there are some excellent micrographs of many of the different forms of martensite.

 

[Greenleader]

Excellent. Thank you. I am writing all of these down. Jerry