Abstract
In this study we investigate the effect of deep cryogenic treatment (DCT) on a high-alloyed ferrous alloy (HAFA) to understand the resulting chemical and physical changes to the HAFA's microstructure and properties. Using multiple materials analysis techniques, we uncover the fundamental chemical changes to the HAFA with DCT, and link changes in material properties to changes in the microstructure. The increased carbide nucleation with DCT is linked to greater solute mobility resulting from the modified stress state of the material and modified chemical bonding of the solutes with the matrix. In turn this provides the possibility of prior formation of nucleation points for primordial carbide formation that act as accelerators for both nucleation and evolution of carbides. These result in modified chemical and microstructural homogeneity of the material that fundamentally led to changes in the surface properties and applicability of HAFA in advanced wear, corrosion and fatigue resistance demanding conditions.
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