Influence of Heat Treatment Process to the Fatigue Properties of High Strength Steel

2019 ◽  
pp. 35-40
Author(s):  
V. Chmelko ◽  
I. Berta ◽  
M. Margetin
Keyword(s):  
Heat Treatment ◽  
High Strength Steel ◽  
Treatment Process ◽  
High Strength ◽  
Fatigue Properties ◽  
Heat Treatment Process

Design of Structure, Composition and Heat Treatment Process for High Strength Steel

2007 ◽  
Vol 561-565 ◽  
pp. 2283-2286 ◽  
Author(s):  
T.Y. Hsu ◽  
Zu Yao Xu
Keyword(s):  
Heat Treatment ◽  
Low Temperature ◽  
High Strength Steel ◽  
Treatment Process ◽  
Low Cost ◽  
Lath Martensite ◽  
High Strength ◽  
Heat Treatment Process ◽  
Quenching Temperature ◽  
Brittle Phase

For steel with combination of high strength (~2000MPa) and toughness, along with low cost, the designed structure should be low-temperature tempered, fine lath martensite with high density of dislocation, coated by film of austenite with considerable thickness and distributed with fine ε (η) or (and) complex carbide. Correspondently, the steel should contain less than 0.5 (wt%) of carbon, certain amount of alloying elements for lowering Ms, such as Ni, Mo and (or) Mn, carbide forming element, e.g. Nb, as well as Si or (and) Al, the element depressing the formation of cementite, the brittle phase in high strength steel. The heat treatment process is suggested as: austenitizing at a temperature slightly above Ac3, followed by quenching at Ms-Mf, partitioning either at quenching temperature or at slightly above Ms for a few minutes, cooling down to room temperature and tempering at low temperature about half an hour.

Sign in / Sign up

Export Citation Format

Share Document