TY - JOUR
T1 - Identifying the dominant failure mode in the hot extrusion tooling used to forge nickel based superalloy
AU - Anderson, M.J.
AU - Zante, R.C.
AU - Ion, W.J.
AU - Brooks, J.W.
AU - McGuire, K.
AU - Rosochowski, A.
PY - 2013/1/1
Y1 - 2013/1/1
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.
UR - http://www.scopus.com/inward/record.url?partnerID=yv4JPVwI&eid=2-s2.0-84866511580&md5=e1cd0e145ec4dfe5368736834fab2595
U2 - 10.1016/j.jmatprotec.2012.09.002
DO - 10.1016/j.jmatprotec.2012.09.002
M3 - Article
AN - SCOPUS:84866511580
SN - 0924-0136
VL - 213
SP - 111
EP - 119
JO - Journal of Materials Processing Technology
JF - Journal of Materials Processing Technology
IS - 1
ER -