MICROSTRUCTURE AND MECHANICAL BEHAVIOR OF 17-7PH STEEL WITH MODIFIED CHEMICAL COMPOSITION AFTER NATURAL AGING

  • University of Zenica, Institute Kemal Kapetanovic of Zenica.
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Modification of the contents of alloying elements with a narrower interval of Cr, Ni and Al can be obtained austenitic-martensitic steel 17-7PH which by, a subsequent heat treatment, can have values of mechanical and chemical properties required for components of automotive engine. Studies have confirmed that the rod dimensions 16mm made of steel 17-7PH with modified content of chromium, nickel and aluminum in combination with heat treatment solution annealing and precipitation hardening, gave values of mechanical properties, satisfying the requirements for steel with standard chemical composition.After aging was obtained martensitic austenitic microstru-cture, with a high percentage of martensite with a slight presence of delta ferrite.

[Belma Fakic, Omer Beganovic, Mujagic Dervis and Edib Horoz (2026); MICROSTRUCTURE AND MECHANICAL BEHAVIOR OF 17-7PH STEEL WITH MODIFIED CHEMICAL COMPOSITION AFTER NATURAL AGING Int. J. of Adv. Res. (Jan). 786-792] (ISSN 2320-5407). www.journalijar.com

Belma Faki?
PhD
Bosnia and Herzegovina

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