Influence of Cr addition on microstructure and mechanical properties of Zr-based alloys corresponding to Zr–C–Cr system

2015 ◽  
Vol 640 ◽  
pp. 240-245 ◽  
Author(s):  
Xinjiang Zhang ◽  
Yibin Li ◽  
Xiaodong He ◽  
Yu Sun ◽  
Shaoping Pang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Microstructure And Mechanical Properties ◽  
Cr Addition ◽  
Cr System

Comparison of the Microstructure and Mechanical Properties of Ti-3573 and Ti-3873 Alloy after Solution Treatment

2020 ◽  
Vol 1003 ◽  
pp. 60-66
Author(s):  
Yi Qin Cai ◽  
Zhuang Li ◽  
Run Qi Zhang ◽  
Jin Yu Li ◽  
Hao Xu Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Strength ◽  
Ductile Fracture ◽  
Solution Treatment ◽  
Trip Effect ◽  
Microstructure And Mechanical Properties ◽  
Beta Titanium ◽  
Cr System ◽  
Beta Titanium Alloys

In this regard, two beta titanium alloys in the Ti-Al-Mo-V-Cr system, Ti-3Al-5Mo-7V-3Cr (Ti-3573) and Ti-3Al-8Mo-7V-3Cr (Ti-3873), have been designed. Comparison of the microstructure and mechanical properties of both alloys after solution treatment was conducted. The result shows that the β grains in Ti-3873 alloy are abnormally grown at WQ. The elongation of Ti-3573 alloy is higher than that of Ti-3873 alloy, it is related to the the smaller grain size. The Ti-3873 alloy has moderate plasticity but higher yield strength and tensile strength. Fine and deep dimples associated with ductile fracture were obtained for the Ti-3573 alloy. The fractography of the β-substrate specimens showed that the fracture mode was ductile fracture. The Ti-3873 alloy has a combination of slip and twinning during deformation. It is possible for the Ti-3573 alloy to undergo both twinning and TRIP effect upon deformation. Therefore, Ti-3573 alloy exhibited good plasticity and strength matching.

scholarly journals Mechanical Properties of Cu-4.0wt%Ni-0.95wt%Si Alloys with and without P and Cr Addition

2007 ◽  
Vol 561-565 ◽  
pp. 2321-2324 ◽  
Author(s):  
Chihiro Watanabe ◽  
Fumiya Nishijima ◽  
Ryoichi Monzen ◽  
Kazue Tazaki
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
Grain Size ◽  
Tensile Strength ◽  
Discontinuous Precipitation ◽  
Second Step ◽  
Precipitation Reaction ◽  
Microstructure And Mechanical Properties ◽  
Discontinuous Precipitation Reaction ◽  
Cr Addition

The effects of P and Cr addition and two-step aging on the microstructure and mechanical properties of a Cu-4wt%Ni-0.95wt%Si alloy have been examined. The addition of 0.02wt%P improves both strength and elongation because it suppresses discontinuous precipitation reaction. The Cr addition to the Cu-Ni-Si-P alloy decreases greatly the grain size, resulting in an increase in elongation. Two-step aging, pre-aging at 300 or 350oC and subsequent second-step aging at 450oC, causes an increase in strength without reducing elongation. The increase in strength is attributable to the decrease in inter-precipitate spacing by the two-step aging. The two-step aged Cu-4wt%Ni- 0.95wt%Si-0.02wt%P-0.02wt%Cr alloy attains a tensile strength of 830MPa, an elongation of 13% and an electrical conductivity of 35%IACS.

Sign in / Sign up

Export Citation Format

Share Document