TY - JOUR
T1 - Identifying the dominant failure mode in the hot extrusion tooling used to forge nickel based superalloy
AU - Anderson, Magnus
AU - McGuire, Kenny
AU - Zante, Remi Christophe
AU - Ion, William
AU - Rosochowski, Andrzej
AU - Brooks, Jeffery
N1 - Publisher's manuscript reference no. PROTEC-D-12-00637R1
PY - 2013/1
Y1 - 2013/1
N2 - The dies used in the extrusion of nickel based super alloys are subject to severe mechanical and thermal stresses, resulting in shortened life and high manufacturing costs. It is necessary to understand the dominant damage mode in order to guide improvements for increased tool life. The operation under examination consists of the hot extrusion of a nickel based superalloy using nitrided hot work tool steel, glassed workpieces and graphite lubrication. The investigation was conducted through a combination of metallurgical analysis, metrology and finite element analysis. Out of the damage modes observed under these conditions, the plastic deformation of the substrate was found to be the cause for tool failure. This paper discusses the relationship between plastic deformation of the substrate and the formation of scoring marks, which fail the die.
AB - The dies used in the extrusion of nickel based super alloys are subject to severe mechanical and thermal stresses, resulting in shortened life and high manufacturing costs. It is necessary to understand the dominant damage mode in order to guide improvements for increased tool life. The operation under examination consists of the hot extrusion of a nickel based superalloy using nitrided hot work tool steel, glassed workpieces and graphite lubrication. The investigation was conducted through a combination of metallurgical analysis, metrology and finite element analysis. Out of the damage modes observed under these conditions, the plastic deformation of the substrate was found to be the cause for tool failure. This paper discusses the relationship between plastic deformation of the substrate and the formation of scoring marks, which fail the die.
KW - die life
KW - nitrided hot work tool steel
KW - failure analysis
KW - failure modes
KW - dominant failure mode
KW - hot extrusion tooling
KW - nickel based superalloy
U2 - 10.1016/j.jmatprotec.2012.09.002
DO - 10.1016/j.jmatprotec.2012.09.002
M3 - Article
VL - 213
SP - 111
EP - 119
JO - Journal of Materials Processing Technology
JF - Journal of Materials Processing Technology
SN - 0924-0136
IS - 1
ER -