# Martensitic transformation, start and finish temperatures

Searching about the microstructure of Cu-Ni-Zn alloys I came across this article (published 2017) which in its conclusion section says:

"It was observed that the starting and finishing transformation temperatures from austenite to martensite ($$A_s$$, $$A_f$$) affected by Zn percent."

As far as know, the starting and finishing temperatures from austenite to martensite must be $$M_s$$ and $$M_f$$, so I'm confused now. Any ideas if it's a mistake in the article or everything is okay and I'm getting this wrong?

P.S.:

• $$A_s$$ - Austenite start temperature
• $$A_f$$ - Austenite finish temperature
• $$M_s$$ - martensite start temperature
• $$M_f$$ - martensite finish temperature