Materials

Thermal Processing and Alloys Selection to Modify Steel Fiber Performance in Ultra-High Performance Concrete

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Abstract

This research aims to characterize the microstructure and the mechanical behavior for a variety of alloys including identification of heat treatments to modify stress vs. strain behavior. Four different fibers were studied with varying shapes and alloy compositions. Fibers were tensile tested to determine the mechanical properties. Fractography and microstructures were characterized using scanning electron microscopy (SEM). The fibers were heat treated by three different methods: fully annealed, partially austenitized, and fully austenitized material. Heat treatments were conducted to manipulate the mechanical and microstructural composition and investigate how they affect positively or negatively their properties. The mechanical performance and microstructure of the fibers were analyzed in both the as-received material and after being heat treated. Fibers were compared by their mechanical performance and viability of heat treatment processes.

Keywords: tensile tests, fiber reinforcement, carbon steel, heat treatment, microstructure, stainless steel

How to Cite:

Williams, B. A., Rivera-Soto, P., Moser, R. D., Williams, S. L. & McClelland, Z. B., (2016) “Thermal Processing and Alloys Selection to Modify Steel Fiber Performance in Ultra-High Performance Concrete”, International Interactive Symposium on Ultra-High Performance Concrete 1(1). doi: https://doi.org/10.21838/uhpc.2016.73