Effects of Chromium and Nickel Additions on the Austenite Grain Coarsening of Low Carbon Structural Steels Containing 0.13% C

Abstract

The austenite grain coarsening behavior of low carbon (0.13% C) structural steels containing chromium and nickel singly or in combination were studied by heating the steels at successive high temperature in the austenite zone in the temperature range of 900-1100°C with an interval of 50°C. The carburizing technique has been adopted to reveal the prior austenite grain boundaries and mean linear intercept method was used to measure the austenite grain size.It was found that on heating the undissolved particles of chromium carbide, Cr2C refine the austenite grain size at temperature below 1000°C, but the effect decreases with increasing temperature. Nickel does not produce any austenite grain refinement. In the presence of nickel particles of chromium carbide are less effective than chromium carbide particles in the absence of nickel in the refinement of austenite grain size.

Determination of the site preference on the structure, magnetism and mechanical anisotropy properties of Mo-containing alloy carbide M6C (M = Fe, Mo)

“…Alloy carbides have an important effect on the properties of structural steels, such as in the strengthening and ductiling of microalloyed steels [1][2][3]. Molybdenum carbides can be used to enhance the resistance to static fracture of components steel, for example springs, bolts and power plant structural parts [4][5][6].…”

The Role of Chemical Composition of High-Manganese Cast Steels on Wear of Excavating Chain in Railway Shoulder Bed Ballast Cleaning Machine

“…That allows cementite matrix to precipitate during cooling of the cast steel, and thus constrain the growth of austenite grains. Other chemical elements in the alloy are responsible inter alia for the size of the austenite crystals [48]. During the heat treatment part of the cementite melts and supersaturates the austenite with carbon and that can result in self-hardening ability of the material and in some cases even strengthen the whole structure of solidifying alloy due to internal stresses [49].…”

Dilatometric Analysis of the Austenite Decomposition in Undeformed and Deformed Low-Carbon Structural Steel

“…Conventional low-carbon structural steels are still one of the most used steel grades of wide application areas [1,2]. The reason for this is their low price, good weldability, formability, and their lean chemical composition [3,4].…”