Results for: Martensite

In Civil Engineering

How is martensite structure formed in steel?

Martensite transformation begins when austenite is cooled below a certain critical temperature, called the matrensite start temperature. As we go below the tmartensite start t ( Full Answer )
In Uncategorized

Can martensitic steel be welded?

Yes it can but special procedures need to be followed. Namely preheating the piece, and post heating for a few hours. If this is not possible then you can use an austenitic ro ( Full Answer )
In Industrial Engineering

Why martensite is so hard and brittle?

For two reasons: 1. martensite is bct structure which prevent the movement of dislocations. 2. martensite has higher carbon concentraton.
In Mechanical Engineering

Why martensite is harder then pearlite?

Because Martensite transformation is almost instantaneous,the Martensite has the identical composition of the parent phase.Formation of Martensite involves a transformation fr ( Full Answer )
In Mechanical Engineering

Why martensite has BCT structure?

when austenite change into martensite, change in the tempratureoccurs(cooling). Due to this thermal stress devlop between the coreand surface . Surface try to expand and core ( Full Answer )
In Uncategorized

What are some uses for martensite?

Martensite is commonly used in machine parts and forging dies. In a crystalline structure, martensite can also be used in the formation of stainless steel.
In Science

What is the etchant used to determine prior austenite grain size in quenched martensite phase?

Following up Martensite in the online encyclopedia, I see that the Widmanstatten pattern in meteorites is revealed by etching with nitric acid. It also informs, that this ( Full Answer )