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Effect of Combined Cyclic Heat Treatment on AISI 1080 Steel: Part II‐Mechanical Property Evaluation
Author(s) -
Mishra Alok,
Mondal Chandan,
Maity Joydeep
Publication year - 2017
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201600215
Subject(s) - materials science , eutectic system , cementite , ductility (earth science) , metallurgy , diffusionless transformation , elongation , carbon steel , carbon fibers , martensite , composite material , ultimate tensile strength , alloy , austenite , microstructure , composite number , corrosion , creep
A typical plain carbon eutectoid steel (without addition of any significant alloying element) is developed possessing notably high strength (UTS = 2016 MPa) and reasonable ductility (%Elongation = 11) with an application of typical cyclic heat treatment that involves a combination of reconstructive and displacive transformations in successive two heat treatment cycles. Apart from fine clusters and spheroids (less than 1 μm in size), the dispersion of nano‐sized cementite particles in a martensitic matrix contributes to significant strengthening of steel. The strength enhancement is much higher than the cyclic heat treatment processes involving only reconstructive transformation or displacive transformation. Accordingly, such a combined cyclic heat treatment paves a new way for high strength plain carbon steel development.