We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Effect of inter-critical quenching on mechanical properties of casting low-alloy steel.
- Authors
Liu Zhongli; Shang Yong
- Abstract
For some casting low-alloy steels, traditional quenching and tempering heat treatments can improve the strength; however, sometimes the ductility is not satisfied. Therefore, some kind of effective heat treatment method seems necessary; one which could improve the ductility, but not seriously affect the strength. In this paper, the effect of inter-critical quenching (IQ) on the mechanical properties of casting low-alloy steel was studied. IQ was added between quenching and tempering heat treatment; and the microstructure and mechanical properties were compared to the same steel with the traditional quenching and tempering treatments. The experimental results show that the microstructure comprises small-size ferrite and martensite when the IQ is adopted; and that different temperatures can control the ferrite quantity and distribution, and, as a result, influence the mechanical properties. In the case of IQ, the tensile strength decreases just a little, but the ductility increases a lot; and the strength-ductility product (its value is the arithmetic product of elongation and tensile strength) increases by between 6% and 10%, which means the IQ heat treatment can improve comprehensive mechanical properties.
- Subjects
METAL quenching; LOW alloy steel; STEEL founding; TEMPERING; STEEL quenching; DUCTILITY; EFFECT of heat treatment on microstructure
- Publication
China Foundry, 2013, Vol 10, Issue 4, p217
- ISSN
1672-6421
- Publication type
Article