Structure and mechanical properties of beryllium ? Chromium alloys

1979 ◽  
Vol 21 (12) ◽  
pp. 907-911
Author(s):  
L. V. Molchanova ◽  
N. D. Nagorskaya ◽  
K. P. Yatsenko ◽  
V. M. Mezhennyi ◽  
V. I. Kolesnikova
Keyword(s):  
Mechanical Properties ◽  
Chromium Alloys

Influence of loading rates on mechanical properties of cobalt-chromium alloys

BDJ ◽  
1975 ◽  
Vol 138 (8) ◽  
pp. 295-298 ◽  
Author(s):  
M H Reisbick ◽  
A A Caputo
Keyword(s):  
Mechanical Properties ◽  
Cobalt Chromium ◽  
Loading Rates ◽  
Chromium Alloys

Magnesium addition in copper‐chromium alloys: The refinement of aging precipitates and improvement on mechanical properties

2019 ◽  
Vol 50 (12) ◽  
pp. 1450-1458
Author(s):  
S.J. Wu ◽  
J.F. Wang ◽  
H.M. Chen ◽  
H. Wang ◽  
J.B. Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Chromium Alloys ◽  
Copper Chromium ◽  
Magnesium Addition

scholarly journals SHS Synthesis, SPS Densification and Mechanical Properties of Nanometric Tungsten

Metals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 252
Author(s):  
Sarah Dine ◽  
Elodie Bernard ◽  
Nathalie Herlin ◽  
Christian Grisolia ◽  
David Tingaud ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cooling System ◽  
Second Phase ◽  
Alloying Element ◽  
Pure Tungsten ◽  
Powder Synthesis ◽  
Grain Sizes ◽  
Chromium Alloys ◽  
Current Production ◽  
Strength And Ductility

Recent studies have shown that low grain sizes are favorable to improve ductility and machinability in tungsten, as well as a resistance to ablation and spallation, which are key properties for the use of this material in a thermonuclear fusion environment (Tokamaks such as ITER). However, as one of the possible incidents during Tokamak operation is the leakage of air or water from the cooling system inside the chamber, resulting in the so-called loss of vacuum accident (LOVA), extensive oxidation may arise on tungsten components, and the use of an alloy with improved oxidation resistance is therefore highly desirable. As current production routes are not suitable for the fabrication of bulk nanostructured tungsten or tungsten alloys samples, we have proposed a new methodology based on powder metallurgy, including the powder synthesis, the densification procedure, and preliminary mechanical testing, which was successfully applied to pure tungsten. A similar study is hereby presented on tungsten-chromium alloys with up to 6 wt.% Cr. Results show that full tungsten densification may be obtained by SPS at a temperature lower than 1600 °C. The resulting morphology strongly depends on the amount of the alloying element, presenting a possible second phase of chromium oxide, but always keeps a partial nanostructure inherited from the synthesized powders. Such microstructure had previously been identified as being favorable to the use of these materials in fusion environments and for improved mechanical properties, including hardness, yield strength and ductility, all of which is confirmed by the present study.

Comparative Study of the Biomechanics of Materials Used in Stenting

2012 ◽  
Vol 188 ◽  
pp. 76-81 ◽  
Author(s):  
Angelica Enkelhardt ◽  
Cristian Sorin Nes ◽  
Nicolae Faur
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Strain Curve ◽  
Elastic Behavior ◽  
High Price ◽  
Cobalt Chromium ◽  
Stainless Steel 316L ◽  
Chromium Alloys ◽  
Materials Used ◽  
High Flexibility

This paper presents a comparative bibliographic study of different materials with elevated biomechanical biocompatibility regarding the stent-blood vessel interaction. Only the materials used in coronary stents’ manufacturing are considered: stainless-steel (316L), Cobalt-Chromium alloys (CoCrMo, CoNiCrMo), Nickel-Titanium alloys (Nitinol), Tantalum. The main characteristics that result from the stress-strain curve of each material are presented, as well as the biocompatibility and durability. The stainless-steel has good mechanical properties, excellent biocompatibility and low price. Cobalt-Chromium alloys have excellent mechanical properties, excellent biocompatibility, acceptable shape memory properties, but high density and low flexibility. The Nitinol represents the best choice, with excellent mechanical properties, excellent biocompatibility, good corrosion resistance, high flexibility (super-elastic behavior), low density, but high price. Tantalum alloys present the best biocompatibility and high flexibility, but the mechanical properties are relative modest.

Sign in / Sign up

Export Citation Format

Share Document