On the fracture toughness of shape memory alloys
Source abstract
Abstract
A phenomenological constitutive model for the thermomechanical constitutive behavior of shape memory alloys is implemented within finite element calculations to model the toughening due to the austenite to martensite phase transformation and martensite deformation during steady mode I crack growth. The process of heat generation during phase transformation near crack tip effects the temperature variations and thus the mechanical behavior of the material near the growing crack tip. Several dimensionless parameters relating the thermomechanical parameters of the constitutive model, the crack growth velocity, and the prevailing sample temperature are identified and applied to study the thermomechanical crack tip fields and the fracture toughness enhancement due to the nonlinear thermomechanical processes in the vicinity of the crack tip.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Shape Memory Alloy Transformations · Microstructure and Mechanical Properties of Steels · Titanium Alloys Microstructure and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (16)
Show source-provided references
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