What is the microstructure of stainless steel?

The microstructure in the annealed condition consists of ferrite grains in which fine carbides are embedded. Ferritic steels used for machining contain a large amount of manganese sulfides to facilitate free cutting. Martensitic stainless steels respond to heat treatment. Martensite is formed through rapid cooling.

Is 304 stainless steel FCC or BCC?

At room temperature, the thermodynamically stable crystal structure of 304 stainless steel is bcc; nevertheless, the alloy’s nickel concentration, as well as the small amounts of manganese (about 1 percent), carbon (less than 0.08 percent) and nitrogen (about 0.06 percent), maintains an fcc structure and therefore the …

What is Type 304 steel?

Type 304 stainless steel is a T 300 Series Stainless Steel austenitic. It has a minimum of 18% chromium and 8% nickel, combined with a maximum of 0.08% carbon. It is defined as a Chromium-Nickel austenitic alloy. Grade 304 is the standard “18/8” stainless that you will probably see in your pans and cookery tools.

What is 304 stainless steel construction?

Type 304, with its chromium-nickel content and low carbon, is the most versatile and widely used of the austenitic stainless steels. Its alloys are all modifications of the 18% chromium, 8% nickel austenitic alloy. Type 304 proves to be resistant to oxidation, corrosion, and durability.

How is microstructural evolution and mechanical properties of 304L stainless steel?

The paper discusses the effect of semi-solid processing on the microstructural evolution and mechanical property of 304L stainless steel. For the study, steel specimens were partially melted and cooled to room temperatures in different cooling medium.

What’s the difference between 304 and 430 stainless steel?

The most distinguishing feature of both these stainless steels is the classes that they belong to. While grade 304 belongs to the austenitic class of stainless steels, grade 430 falls under the ferritic class. This means that their crystalline microstructure varies.

How does microstructure affect the tensile properties of stainless steel?

The different microstructure in SLMed stainless steel will certainly cause different subsequent mechanical properties. The presence of ultrafine cellular subgrains and piled up dislocation at the cellular walls, along with the presence of precipitates, could all contribute to the increasing tensile strength [ 8, 15, 16, 18, 19 ].

What is the chemical composition of 304L SS plates?

For the present study, commercially available solution annealed 304L SS plates, with chemical composition Fe-18.52Cr -7.85Ni -0.016C-1.59Mn-0.29Si-0.003S-0.016P, have been used. The microstructure of the steel in as -received condition is shown in Figure1.