The mechanical properties and microstructure of 1,000 MPa grade Cu-Ni TRIP steel at different bainitic isothermal temperatures
by Xu-ming Wang; Ai-min Zhao; Zhi-yi Bao
International Journal of Materials and Product Technology (IJMPT), Vol. 65, No. 1, 2022

Abstract: For developing TRIP steel with good coordination on strength and plasticity, a TRIP steels containing copper and nickel at different bainite isothermal temperatures (350-470°C) were investigated to explore the best process. The microstructure of the tested steel was investigated by X-ray diffraction, transmission electron microscope, scanning electron microscope, and electron backscatter diffraction, as well as its mechanical properties were tested and analysed by uniaxial tensile test. It can conclude that when holding bainitic isothermal temperature at 410°C, the steel obtained the excellent mechanical properties, e.g., the elongation is 16.88%, the strength of extension is 1,088 MPa and the strength and ductility product is 18,365 MPa%. The crystallite dimension and carbon level of retained austenite play an important role in its stability. Moreover, in terms of morphology, the film-like austenite makes an important impact in the gentle transition during deformation and the stability of retained austenite is affected by its film thickness.

Online publication date: Wed, 20-Jul-2022

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Materials and Product Technology (IJMPT):
Login with your Inderscience username and password:

    Username:        Password:         

Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email