cementite उदाहरण वाक्य

Cementite is essentially a ceramic, which accounts for the sharpness of the Damascus ( and bulat ) steel.
In the third stage, ?-carbon precipitates into cementite, and the carbon content in the martensite decreases.
Such austenite is highly unstable and, if given enough time, will precipitate into various microstructures of ferrite and cementite.
For a low carbon steel, typically discontinuous " stringers " or small particles of cementite will be present between laths.
Both consist of a ferrite matrix containing spherical inclusions, but SS contains cementite inclusions, whereas MI contains graphite inclusions.

"White " cast irons contain their carbon in the form of cementite, or iron carbide ( Fe 3 C ).
The two, ferrite and cementite, precipitate simultaneously producing a layered structure called pearlite, named for its resemblance to mother of pearl.
A euctoid steel ( 0.77 % carbon ) will have a pearlite structure throughout the grains with no cementite at the boundaries.
This reduces the effects of hydrogen embrittlement and improves steel micro-structure by reducing the effects of the inter-granular cementite phase.
Cementite is unstable and breaks down between 600 1100 �C into ferrite and carbon, so working the hot metal must be done very carefully.