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Rolling Impact on The Performance Of TZM Alloy

Rolling makes TZM alloy form fibrous tissue (also known as fiber texture) internal, along the direction of the fiber orientation which greatly improves mechanical properties, outstanding performance for the tensile strength increased. At the same time, rolling TZM alloy grains become so small that the same amount of deformation, the deformed grains dispersed in the more conduct, so the degree of strain within the grains and grain boundaries near the difference is smaller, more uniform deformation, Relatively speaking, the stress concentration caused by the decrease. Thus TZM alloy can withstand before breaking large amount of deformation, resulting in greater elongation. Due to fine grain size, grain boundary and turns, is not conducive to crack propagation, resulting in the fracture process in the sample can absorb more energy showed good toughness at room temperature. Further, TZM alloy with increasing deformation, hard and brittle carbide phase is crushed becomes smaller, so more uniform dispersion, dispersion strengthening effect is more pronounced. One reason for this is the material has a high tensile strength and good toughness at room temperature.

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