Why is austenitic iron non-magnetic, but ferritic iron is?

Subject: Why is austenitic iron non-magnetic, but ferritic iron is?

Date: Thu Feb 1 14:31:19 2001
Posted by Roy
Grade level: undergrad School: Southridge High School
City: Kennewick State/Province: WA Country: USA
Area of science: Chemistry
ID: 981055879.Ch

Message:


I teach a course in Materials Science Technology, and use a demonstration 
to show how pure iron undergoes a phase change from ferrite to austenite, 
accompanied by a volume decrease.  I also know that the high-temperature 
austenite is not magnetic, whereas ferrite is, but I can't find just why, 
despite looking in several metallurgy books.  Help?

Re: Why is austenitic iron non-magnetic, but ferritic iron is?

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