Effect of oxygen boost diffusion treatment on the mechanical properties of Ti-6Al-4V alloy

2021 ◽  
Vol 25 ◽  
pp. 101248
Author(s):  
Yong Jiang ◽  
Hairong Mao ◽  
Wang Xiaowei ◽  
Yilan Lu ◽  
Jianming Gong
Keyword(s):  
Mechanical Properties ◽  
Diffusion Treatment ◽  
Effect Of Oxygen

scholarly journals Effects of temperature on interfacial evolution and mechanical properties of pure titanium and carbon steel sheets bonded via new multi-pass continuous hot-roll diffusion with nickel interlayer

2021 ◽  
Author(s):  
Chun-Ming Jimmy Lin ◽  
Mohsen Saboktakin Rizi ◽  
Chia-Kai Chen
Keyword(s):  
Mechanical Properties ◽  
Carbon Steel ◽  
Pure Titanium ◽  
Engineering Application ◽  
Peel Strength ◽  
Processing Temperature ◽  
Diffusion Treatment ◽  
Steel Sheets ◽  
New Type ◽  
Interfacial Evolution

Abstract This study performed experiments and thermodynamic calculations to elucidate the effects of diffusion temperature on interfacial evolution and mechanical properties of pure titanium and carbon steel (i.e., steel) sheets bonded via a new type of multi-pass continuous hot-roll diffusion with nickel interlayer. The interfacial evolution results revealed that this new type of multi-pass continuous hot-roll diffusion treatment showed a very good adherence due to its metallurgy bonding, because it made a remarked improve to between compound and intermetallic compounds relationship. Secondly, in mechanical properties results revealed that the highest shear strength (∼470 MPa) was obtained at a processing temperature of 850°C. The highest peel strength (∼21 N/mm) was obtained in the sample processed at 900°C. Bonding temperatures above and below these levels reduced the bond strength respectively due to poor atom diffusion and excessive compound formation, resulting in joint failure at the Ti-Ni interface. Extensive cleavage planes with various alignments were observed on the fracture surfaces in these cases. Overall, a hot-rolling temperature of 850°C was found to provide the optimal tradeoff between interfacial bonding strength and ductility. This work provided an economical and convenient solution for broadening the engineering application of interface between sheets of pure titanium and steel.

The Effect of Oxygen, Nitrogen, and Hydrogen on the Mechanical Properties of Cb-752

1974 ◽  
Vol 96 (3) ◽  
pp. 201-206 ◽  
Author(s):  
M. W. Mahoney ◽  
N. E. Paton
Keyword(s):  
Mechanical Properties ◽  
Grain Boundaries ◽  
Tensile Properties ◽  
Uniform Distribution ◽  
Base Alloy ◽  
Uniaxial Tensile ◽  
Hardness Testing ◽  
Strength Parameters ◽  
Brittle Transition ◽  
Effect Of Oxygen

Uniaxial tensile properties of the niobium-base alloy Cb-752 have been determined as a function of oxygen, nitrogen, and hydrogen content over a temperature range of −196 C to 200 deg C. Each of these impurities increased the temperature at which a ductile-brittle transition occurs. Although ductility was severely reduced, strength parameters were relatively unchanged making detection of embrittlement by hardness testing difficult. Impurity levels for embrittlement were sufficiently low and the affinity of Cb-752 for contamination sufficiently great that processing operations require strict control. The mechanism of this impurity embrittlement is not well understood. However, observations of fracture surfaces of brittle failures reveal mixed intergranular cleavage with a uniform distribution of precipitates throughout grain boundaries. These observations are discussed in the light of current theories.

Effect of Oxygen on the Mechanical Properties of Polymer-Derived Si-Al-C-O Fibers

2007 ◽  
pp. 1287-1290
Author(s):  
Chun Man Zheng ◽  
Xiao Dong Li ◽  
Yu Xi Yu ◽  
Da Fang Zhao ◽  
Feng Cao
Keyword(s):  
Mechanical Properties ◽  
Effect Of Oxygen

Effect of Oxygen and Nitrogen Doping on Mechanical Properties of Silicon Using Nanoindentation

2004 ◽  
Vol 821 ◽  
Author(s):  
A. Karoui ◽  
G. Rozgonyi ◽  
T. Ciszek
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Nitrogen Doping ◽  
High Hardness ◽  
Near Surface ◽  
Nano Indentation ◽  
Subsurface Region ◽  
Float Zone ◽  
Effect Of Oxygen ◽  
Scratch Tests

AbstractThe effects of oxygen and nitrogen on the mechanical properties of Czochralski (CZ) and float zone silicon have been studied using nano-indentation. Nitrogen free FZ Si exhibited low hardness of 6.49 GPa and elastic modulus of 104 GPa. When doped with 2×1015cm−3 nitrogen, FZ Si hardness and elastic modulus increased to 8.2 and 182 GPa, respectively. In the near-surface denuded zone of N-doped CZ Si (N-CZ) the hardness correlates well with the O and N profiles. Distinct high hardness points, found in the O- and N- rich subsurface region, were attributed to precipitates. Nano-scratch tests of N-CZ Si confirmed the existence of hard phases, mostly small precipitates, whose density, estimated to be 2×1013cm−3, is in the range of previously suggested nuclei density in as-grown N-CZ silicon.

Sign in / Sign up

Export Citation Format

Share Document