CLOSURE NOTICE: Our office will be closed on Thursday and Friday in observance of the Thanksgiving holiday. Orders placed and inquiries received during this closure will be processed starting Monday. Thank you for your understanding.

help desk software

Product Code: ICAL05_1005

Modeling the Microstructure Evolution During Laser Processing of Ti-6Al-4V
Authors:
Shawn Kelly, Applied Research Laboratory - The Penn State University; State College PA USA
S. Suresh Babu, Oak Ridge National Laboratory; Oak Ridge TN USA
Stephen Kampe, Materials Science and Engineering Dept., Virginia Tech; Blacksburg VA USA
Presented at ICALEO 2005

Near-net shape processes, such as laser metal deposition (LMD), offer a unique combination of process flexibility, time savings, and reduced cost in producing titanium alloy components. The current challenge in processing titanium alloys (Ti-6Al-4V) using LMD is in understanding the complex microstructure evolution in a part fabricated layer by layer. The microstructure is affected by the repeated thermal cycling into the ? and ?+? phase fields during the deposition of multiple layers of material. A microstructure model that predicts the ? phase fraction and morphology evolution was constructed using thermodynamic and kinetic models to quantify the effect of thermal cycling on the as-deposited microstructure evolution. When applied to computed thermal cycles for LMD of Ti-6Al-4V, the microstructure model is in qualitative agreement with the as deposited microstructure. The model predicts greater amounts of colony-? formation during a thermal cycle just below the beta transus, as observed in the as-deposited material.

Product Thumbnail

$28.00

Members: $28.00

Note: When applicable, multiple quantity discounts are applied once the items are added to your cart.