Interfacial reactions and strength properties in dissimilar titanium alloy/Ni alloy/microduplex stainless steel diffusion bonded joints

2013 ◽  
Vol 560 ◽  
pp. 288-295 ◽  
Author(s):  
S. Kundu ◽  
S. Sam ◽  
S. Chatterjee
Keyword(s):  
Stainless Steel ◽  
Titanium Alloy ◽  
Strength Properties ◽  
Interfacial Reactions ◽  
Bonded Joints ◽  
Ni Alloy

scholarly journals The Effect of Biomaterial Selection on the Static Strength of Femur Prosthesis

2018 ◽  
Vol 12 (3) ◽  
pp. 146-150
Author(s):  
Saim Kural ◽  
Safiye İpek Ayvaz
Keyword(s):  
Stainless Steel ◽  
Titanium Alloy ◽  
Material Selection ◽  
Strength Properties ◽  
Static Strength ◽  
Skeletal System ◽  
Human Organs ◽  
Ti6al4v Titanium Alloy ◽  
Axial Forces ◽  
Femoral Implants

Throughout the history, biomaterials have been widely used for replacing damaged human organs. Biocompatibility is generally defined as the harmony of the biomaterials with human body physically, chemically and biologically. Mechanical strength properties are of great importance in biocompatibility of the biomaterials which are used as orthosis and prosthesis in skeletal system. In this study, static analyses of femur implants which were modelled by using 316 stainless steel and Ti6Al4V titanium alloy, were carried out under three different axial forces (500, 750 and 1000 N). As a result of the analyses made, the effect of material selection on the biomechanical and biocompatibility properties of femoral implants was determined.

scholarly journals The Effects of Hot-Pack Coating Materials on the Pack Rolling Process and Microstructural Characteristics during Ti-46Al-8Nb Sheet Fabrication

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 762
Author(s):  
Huang ◽  
Liao ◽  
Yu ◽  
Liu ◽  
Wang
Keyword(s):  
Stainless Steel ◽  
Titanium Alloy ◽  
Grain Boundary ◽  
Rolling Process ◽  
Interfacial Reactions ◽  
Stress Strain ◽  
Microstructural Characteristics ◽  
Local Flow ◽  
Pack Rolling ◽  
Hot Pack

The effects of the package materials on the hot workability and stress-strain characteristics of high-Nb TiAl alloy with a nominal composition of Ti-46Al-8Nb (in at.%) were systematically studied via “sandwich structure” hot compression. TiAl sheet fabrication was conducted by hot pack rolling, and the microstructural characteristics and deformation mechanisms were investigated. Based on the analysis of compressed samples and stress-strain curves, the stainless steel/TiAl structure showed better deformation compatibility with homogeneous deformation and decreasing resistance. However, severe interfacial reactions were inevitable. Meanwhile, for the titanium alloy/TiAl structure, few interfacial reactions happened, but wavy deformation and high resistance complicated the compression process. Finally, a package structure with an outer stainless steel isolation layer and inner titanium alloy was determined for the pack rolling process. A TiAl sheet with no crack defects was obtained with 80% reduction. The pack-rolled TiAl sheet took on alternate microstructure of the grain-boundary Al-enriched ribbons and elongated lamellar colonies ribbons. The grain-boundary recrystallized α2 phase, lumpy γ phase, and massive α2/γ lamellae could be observed, which led to the scatter microstructure. The microstructural characteristics mainly resulted from the solute segregations of as-cast Ti-46Al-8Nb alloys, which triggered the local flow softening and deformation incompatibility during hot pack rolling.

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