Open AccessImproved Criteria for Acceptable Yield Point Elongation in Surface Critical Steels
Author(s) -
David K. Matlock,
John G. Speer
Publication year - 2007
Language(s) - English
Resource type - Reports
DOI - 10.2172/917023
Subject(s) - elongation , materials science , yield (engineering) , profilometer , substrate (aquarium) , metallurgy , strain (injury) , composite material , ultimate tensile strength , surface finish , geology , medicine , oceanography
Yield point elongation (YPE) is considered undesirable in surface critical applications where steel is formed since "strain lines" or Luders bands are created during forming. This project will examine in detail the formation of luders bands in industrially relevant strain states including the influence of substrate properties and coatings on Luders appearance. Mechanical testing and surface profilometry were the primary methods of investigation