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The Effect of Temperature on Microstructureu and Mechanical Behavior of the Vacuum Brazed Joint of Ti-46.5Al-5Nb Alloy and 42CrMo Steel W.
The elemental diffusion and reaction is the predominant factor of joint forming.
The physical and mechanical properties of the base materials are indicated in table 1.
Table 1 Physical and mechanical properties of base materials Matrix Density （g/cm3） Thermal expansion coefficient（10-6/ K） Elastic modulus σs (Mpa) σb (Mpa) δ(%) TiAl 3.76 10.8 176 480 450 2 42CrMo 7.82 14.2 211 1080 930 12 Results and discussion When brazed at 810℃, there exists nonwelding character in joint between 42CrMo and B-Ag72Cu, and the interfaces between joint and matrices are plane.
The elemental diffusion and reaction is the dominant factors of joint forming and variation.

The first chapter is devoted to mechanical properties of TWBs.
The first section is devoted to mechanical properties of TWBs.
Mechanical properties of TWBs Tensile testing.
On the other hand, properties of the base metals can be considerably affected by the welding process.
High stress concentration factors are reported in the transition zone.

The mechanical properties of RPRF results are known to produced better properties, especially mechanical properties.
In this study, ARB experiments were carried out using 6 cycles, but the mechanical properties produced were still below the mechanical properties of RPRF.
Produces increased mechanical properties.
If there is a change in the morphology of the grain, it will affect the increase in mechanical properties, but the volume fraction of the reinforcing particles will tend to decrease [20-22].
In: Proceedings of Strategic Management Factors of MNC’s Subsidiaries–Comparative Analysis of Metal Manufacturing and Other Industries, Praque, Czech Republic, (Klapalova, A., eds). pp. 1–6

Due to the associated mechanical forces for such implants, the materials for implant production need to meet specific requirements.
In view of the biological properties of bone implants, it is known that several materials have the capacity to form a chemical bond with bone tissue at the interface and can induce a continuous transition from bone tissue to the implant surface[1].
In addition to being classified as cyto- and histocompatible[6], these DNA-coatings demonstrated to decrease inflammatory cytokine secretion by macrophages[7] and be feasible for loading with growth factors[8;9].
Plain DNA-coatings did not affect the behavior of osteoblast-like cells.
In vitro and in vivo effects of deoxyribonucleic acid-based coatings funtionalized with vascular endothelial growth factor.

Compressive strength and scaffold porosity are factors of concern when scaffold is applied to repair bone defects, in addition to other factors such as biocompatibility and bioresorbability [16].
Other factors that may affect among others are gelatin and chitosan, which are not capable to bind a lot of carbonate apatite, supported by the binding force saturation of CA:Ch-GEL mixture and CO3-2 ions decrease.
Scaffold must have porous properties.
Scaffolds with large porosity will decrease mechanical properties such as compressive strength [23].
The mechanical properties and osteoconductivity of hydroxyapatite bone scaffolds with multi-scale porosity.

Box 524, Auckland Park 2006, Johannesburg, South Africa. 1Doctorate Candidate, Department of Mechanical Engineering Science, University of Johannesburg, Auckland Park Kingsway Campus, P.
Microstructural evolution at the joint interface after Friction Stir Welding revealed three different zones, namely; the Stir Zone (SZ) or Stir Nugget (SN), refers to the zone previously occupied by the tool pin characterised by recrystallized grains; the Thermo-Mechanically Affected Zone (TMAZ) characterised by plastically deformed grain and the Heat-Affected Zone (HAZ), which lies closer to the parent material, the material in this zone has experienced a thermal cycle that has modified the microstructure and/or the mechanical properties [3].
Varying the tool shoulder diameter is known to significantly affect the microstructural evolution and the joint integrity [4-5].
However, the study by Elangovan and Balasubramanian [4] was conducted using FSP and that of Zhang et al [5] was conducted on similar joining of aluminium alloys, as such, research study into the effect of shoulder size on dissimilar materials is required due to the difference in their material properties.
Cederqvist and A.P Reynolds: Properties of friction stir welding aluminium lap joints. 2nd International FSW symposium, Gothenburg, Sweden. 26-28 June (2000).

The combination of the above mentioned factors due to HCPEB treatment can promote structural phase transformations and result in the formation of very fine grains within the irradiated surface layers, which would remarkably influence the physical mechanical properties of the irradiated surface [3].
In this work, the effectiveness of the HCPEB treatment for modifying the texture and surface properties of 3Cr13 martensitic stainless steel with melting its top surface is demonstrated.
The sample surface was prepared before the HCPEB treatment by mechanical polishing to ensure a similar initial surface state.
Finally, in our opinion, the thermal stress induced by the surface irradiation may be an important factor which should affect the formation of fine austenite.
Because of the above factors, the martensitic transformation could completely be suppressed.

Introduction To gain a good mixing quality, there are a number of factors to be dealt with including mixer and rotor geometries, mixing temperature, mixing time, fill factor, rotor speed, sequence of chemical loading, and material composition.
These factors are known to affect magnitudes of shear and extensional flows.
Blends of elastomers have been widely used owing to their compromised properties.
Natural rubber (NR) has excellent tack and mechanical properties while ethylene-propylene-diene rubber (EPDM) possesses good heat and ozone resistances.
Therefore, blends of NR and EPDM would offer a combination of several useful properties [2-4].

Metallic glass alloys have been considered as attractive materials due to their excellent mechanical and magnetic properties.
Thermal and mechanical properties were also investigated and summarized in Table 4.
Thermal and mechanical properties of the candidate nozzle materials.
The results of magnetic properties are summarized in Table 3.
Typical magnetic properties of amorphous strip.

The unbalance factors affected on the ultra-high speed grinding wheel and its system were analyzed, and its effects on the machining quality in the process were also discussed.
Because the centrifugal force is in relation to the angular velocity of the rotor ω, the balance grade is expressed as G e= ×ω (2) The centrifugal force is given by F = φω2 = mGω, therefore Gm /ϕ = ω (3) Unbalance Factors of Ultra-high Speed Grinding Wheel.
The factors related to the unbalance of the wheel system are as follows: (1) Asymmetry of wheel base material. (2) Dimension, shape and position error of the wheel due to machining process, assembling and fitting error of wheel system. (3) Wear and jam of wheel, fall and break of grits, etc.
Fig.3 Actual value and theoretical value of unbalance amount Fig.4 Ultra-high speed grinder and wheel for test Selection of Balance Precision for Ultra-high Speed Grinding Wheel System To select the balance precision of ultra-high speed tool reasonably, some factors must be considered for the requests of machining quality and performance, as well as the cost of wheel system [3, 4]
So, it is important to study the vibration property of the wheel system in ultra-high speed grinding process [5].