Volume 40, Issue 3 (Journal of Advanced Materials-Fall 2021)                   jame 2021, 40(3): 43-59 | Back to browse issues page


XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Saki H, Morakabati M, Mahdavi R. EFFECT OF THE TWO-PHASE SOLUTION ANNEALING AND AGING ON ALPHA PRECIPITATES AND TENSILE PROPERTIES OF Ti-3Al-8Mo-7V-3Cr ALLOY. jame 2021; 40 (3) :43-59
URL: http://jame.iut.ac.ir/article-1-1111-en.html
Faculty of Materials and Manufacturing Technologies, Malek Ashtar University of Technology , m_morakabati@mut.ac.ir
Abstract:   (1210 Views)
Metastable beta titanium alloys have the ability to achieve different microstructures as a result of various heat treatment cycles. The aim of the present study was to create a combination of fine spherical and needle-shaped alpha phase in a metastable beta Titanium alloy (Ti-3Al-8Mo-7V-3Cr) using two-phase solution annealing and aging to improve tensile properties. In this regard, one strip of the alloy was solution annealed in the two-phase region (α+β) at 750°C. Then, some of the solution treated specimens were aged in one step and the others in two steps. The microstructural observation and phase analysis were studied by scanning electron microscope (SEM) and X-ray diffraction (XRD), respectively followed by investigating tensile properties using tensile test. The results exhibited that the microstructure of the alloy after annealing in the two-phase region (α+β) consisted of a spherical primary alpha phase of 1 μm in the beta matrix. One-step aging at 600°C resulted in a microstructure without secondary alpha layers. This heat treatment cycle resulted a yield strength of 980 MPa and fracture strain of 13.9%. Two-step aging at 300°C and 600°C led to formation of the secondary alpha layers with 0.1 μm thickness and increased the yield strength and fracture strain to 1007 MPa and 15.8%, respectively.
Full-Text [PDF 2230 kb]   (360 Downloads)    
Type of Study: Research | Subject: Heat treatment
Received: 2020/10/6 | Accepted: 2021/08/28 | Published: 2021/11/1

Add your comments about this article : Your username or Email:
CAPTCHA

Send email to the article author


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2022 CC BY-NC 4.0 | Journal of Advanced Materials in Engineering (Esteghlal)

Designed & Developed by : Yektaweb