Precipitation Hardening
Increasing Yield Strength through Precipitation Hardening
Precipitation hardening, also known as age hardening, is used to significantly increase strength and hardness, while maintaining corrosion resistance and dimensional stability.
The process involves three primary stages: solution treating, rapid cooling, and aging. The material is first heated to dissolve alloying elements into a uniform solid solution. After cooling, the part is reheated to a lower, controlled temperature for a specified time, allowing precipitates to form within the metal’s microstructure. Precipitation hardening is commonly applied to precipitation‑hardening stainless steels and nickel-based alloys. It is also an ideal process for applications that require a balance of strength, toughness, and reliability without excessive distortion.
Benefits of Precipitation Hardening
Achieves exceptional mechanical strength without excessive brittleness.
Minimal distortion during processing, making it ideal for tight‑tolerance and precision components.
Maintains corrosion‑resistant properties, especially in precipitation‑hardened stainless steels.
Aging temperature and time can be adjusted to meet exact performance requirements.
Reduces thermal shock and the risk of cracking compared to conventional hardening methods.