4. Enhanced mechanical properties
4.1 Quenching and tempering
The purpose of quenching and tempering cast irons is not simply to regulate hardness, but rather to establish the best compromise between machinability, wear resistance and mechanical characteristics (strength, resilience, plasticity) of statically or dynamically highly stressed parts: it is this set of properties that we refer to here under the general term of toughness. Figure illustrates, for example, the evolution of mechanical properties after quenching and tempering of moderately alloyed gray cast iron.
For the treatment of lamellar or white graphite cast irons, water quenching or even oil quenching is generally...
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Enhanced mechanical properties
Surface hardening
Bibliography
References
Standardization
- Foundry – Designation system for cast iron. Symbolic and numerical designation. Replaces NF A 02-001. - NF EN 1560 - 09-97
- Foundry – Lamellar graphite cast iron. Replaces NF A 32-101. - NF EN 1561 - 10-97
- Foundry – Malleable cast iron. Replaces NF A 32-701 and NF A 32-702. - NF EN 1562 - 10-97
- Foundry – Spheroidal graphite cast iron. Replaces NF A 32-201. - NF EN 1563 - 10-97
- Foundry – Cast...
Organizations
Association technique de fonderie (ATF) http://www.atf.asso.fr/
Association technique de traitement thermique (ATTT) http://www.attt.org/
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