additionshärdade
Additionshärdade is a term used in materials science to describe a family of processing approaches in which hardness is increased primarily by introducing alloying elements or reinforcing phases during fabrication. The term, rooted in Swedish technical language, is used to distinguish this method from hardening achieved mainly through deformation, heat treatment alone, or surface-hardening techniques.
Mechanisms contributing to additionshärdade materials include solid-solution strengthening, where solute atoms impede dislocation motion; precipitation hardening,
Methods for achieving additionshärdade properties involve incorporating additional elements during primary processing, such as alloy melting,
Applications and trade-offs: additionshärdade materials are common in tool steels, aluminum and titanium alloys, nickel-based superalloys,
Context: the concept aligns with established strengthening mechanisms—solid-solution strengthening, precipitation hardening, and dispersion strengthening—and is used