alpha case

fengzhongke

What is the meaning of "alpha case"?(Alpha Case: Wrought Titanium)

tong

From Wikipedia
In metallurgy, alpha case is the oxygen-enriched phase that occurs when titanium and its alloys are exposed to heated air or oxygen. Alpha case is brittle, and tends to create a series of microcracks which will reduce the metal's performance and it's fatigue properties. Alpha case can be avoided by processing in a vacuumed environment, but, due to its costs it is usually eliminated via machining or chemical milling

fengzhongke

Thank you!

fengzhongke

洛氏硬度的ASTM测试标准，供大家参考！