Martensite is a very hard form of steel crystalline structure. It is named after German metallurgist Adolf Martens. By analogy the term can also refer to any crystal structure that is formed by diffusionless transformation. [1]

The different microscopic constituents of iron and steel which commonly occur are: 1. Ferrite. 2. Cementite. 3. Pearlite. 4. Martensite. 5. Austenite. 6. Troostite. 7. Sorbite. The other constituents comprise the three allotropic forms of nearly pure iron, graphite and slag.

Martensite is a very hard metastable structure with a body-centered tetragonal (BCT) crystal structure. Martensite is formed in steels when the cooling rate from austenite is at such a high rate that carbon atoms do not have time to diffuse out of the crystal structure in large enough quantities to form cementite (Fe3C).

Austenite is a face-centered cubic structure that forms when steel is heated to high temperatures and then cooled slowly, resulting in a soft and ductile material. In contrast, martensite is a body-centered tetragonal structure that forms when steel is rapidly cooled, resulting in a …

The martensite is formed by rapid cooling (quenching) of austenite which traps carbon atoms that do not have time to diffuse out of the crystal structure. This martensitic reaction begins during cooling when the austenite reaches the martensite start temperature (Ms) and the parent austenite becomes mechanically unstable.

Tempered martensite consist of the stable ferrite and cementite phases. Tempered martensite may be nearly as hard and strong as martensite but with substantially enhanced ductility and toughness. Martensite is a very hard metastable structure with a body-centered tetragonal (BCT) crystal structure.

The meaning of MARTENSITE is the hard constituent that is the chief component of quenched steel.

Martensite is a supersaturated solid solution of carbon trapped in a body-centered tetragonal structure and is metastable. You might find these chapters and articles relevant to this topic. The name martensite is after the German scientist Adolf Martens. It was used originally to describe the hard microscopic constituent found in quenched steels.

Aug 8, 2024 · Martensitic stainless steel is a type of stainless steel with a body-centered tetragonal (BCT) crystal structure covered by the 400 series alongside ferritic stainless steel. It is primarily composed of 12-18% chromium and 0.1-1.2% carbon.

The term “martensite” usually refers to a form of steel with a distinctive atomic structure created through a process called martensitic transformation. Martensite is made from austenite, a solid solution of iron with a small amount of carbon in it.