Martensitic-austenitic steels for the fabrication of equipment and other articles in instrument making

Autor: V. G. Gorbach, S. B. Birin, I. V. Sidoruk, I. N. Mel'kumov
Rok vydání: 1992
Předmět:
Zdroj: Metal Science and Heat Treatment. 34:11-14
ISSN: 1573-8973
0026-0673
DOI: 10.1007/bf00768702
Popis: 1. Martensitic-austenitic steels of the type N19M2T2B possess high strength and plasticity (530–560 HV, σu=1760–1900 N/mm2, δ=8–10%, ψ=40–50%, and a1=50–60 J/cm2), high fatigue strength, thermal-cycling stability, resistance to erosion under complex effects (chemical, thermal, and mechanical), elastic modulus, and coercive force. 2. The optimal set of mechanical, elastic, and magnetic properties of the group of martensitic-austenitic steels under consideration is attained by hardening aging in the interval of the α→γ-transformation after which the steels possess the structure of aged martensite, inverted austenite, and secondary martensite, and can be used, for example, for the fabrication of molds for the pressurized casting of alloys of nonferrous metals and polymers.
Databáze: OpenAIRE
Externí odkaz: