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Vol 10, Issue 1, 2014
Pages: 101 - 109
Case study
Metallic materials
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Published: 24.04.2014. Case study Metallic materials

MODIFICATION OF CHEMICAL COMPOSITION AND THERMAL TREATMENT OF SEMIAUSTENITIC STAINLESS STEEL 17-7PH

By
Belma Fakić ,
Belma Fakić
Contact Belma Fakić

Institute Kemal Kapetanović, University of Zenica , Zenica , Bosnia and Herzegovina

Diana Ćubela ,
Diana Ćubela

FACULTY OF ENGINEERING AND NATURAL SCIENCES, University of Zenica , Zenica , Bosnia and Herzegovina

Mihyar Noureldin Mahmoud
Mihyar Noureldin Mahmoud

South campus, College of Engineering Material Research Centre Khartoum Sudan , Sudan University of Science and Technology , Khartoum , Sudan

Abstract

Application of the new materials in the automotive industry is a challenge that is placed in front of 
researchers of our times. The challenge is reflected in the modification of the chemical composition of 
steel and heat treatment in order to achieve improved mechanical properties. Steel 17-7PH is 
austenitic - martensitic steel with high strength (750-1500 MPa) and hardness (34-49HRC), which is 
achieved by controlled phase transformation and complex heat treatment of precipitation 
strengthening. The paper will present the results of testing the hardness and microstructure of 
semiaustenitic precipitation strengthening stainless steel 17-7PH with modified chemical composition, 
by standard prescribed heat treatment TH 1050 and modified heat treatment RH 950. 

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