Noun:

ஒசுத்தனைற்று,

austenite's Usage Examples:

The important manganese steels of commerce and certain nickel steels are manganiferous and niccoliferous austenite, unmagnetic and hard but ductile.

(/a primarg, Oxide, Cementite(t 400 300 20 even if rich in austenite, is strongly magnetic because of the very magnetic a-iron which inevitably forms even in the most rapid cooling from region 4.

Its further cooling undergoes three spontaneous retardations, one at K' (Ar 3 about 820°), at which part of the iron begins to isolate itself within the austenite mother-metal in the form of envelopes of 0-ferrite, i.

On cooling into region 6 or 8 austenite should normally split up into ferrite and cementite, after passing through the successive stages of martensite, troostite and sorbite, Fe 0 C Fe 3 C +Fe(i 3).

Beta (13) iron, an unmagnetic, intensely hard and brittle allotropic form of iron, though normal and stable only in the little triangle GHM, is yet a state through which the metal seems always to pass when the austenite of region 4 changes into the ferrite and cementite of regions 6 and 8.

"i) solidifies, its carbon may form cementite following the cementite-austenite diagram so that white, i.

, so that the 0-iron may slip into the a state, and the transformation of the austenite into pearlite and cementite may complete itself.

Clearly the mushy mixture of solid austenite and molten iron of which the metal in region 2 consists cannot cohere under either the blows or the pressure by means of which welding must be done.

But this change may be prevented so as, to preserve the austenite in the cold, either very incompletely, as when high-carbon steel is " hardened," i.

It can be caused by the transformation of retained austenite to martensite or by the precipitation of alloy carbides.