$7.50

               •    Author: Jerome Fourmann

•    Author's Company: Rio Tinto Alcan

•    Title: Defects Affecting Extruded Surface – Coarse Grain

•    Volume: Vol. 73, No. 4

•    Year: 2015

•    No. Pages:  1.5

•    Description: The seventh article in a series focused on extrusion defects addresses the coarsegrain condition, in particular peripheral coarse grain (PCG), coarse grain banding, or outer-band affecting the as-extruded metallurgical structure. The condition can bevisible on mill finish surfaces after stretching or after post-processing, such as machining and anodizing, in which coarse grain may take the form of streaks. The grain structure control in 6000 series extrusions has become a requirement for many applications, particularly in the automotive sector. Descriptions of the characteristics, appearance, causes, and possible remedies are provided.

•    Companies Mentioned:

Product Code: Art-00806