Microstructural and mechanical characterisation of a Ti6Al4V/TiC/10p composite processed by the BE-CHIP method

Silva, Antônio Augusto Moura da; Santos, Jorge F. dos; Strohaecker, Telmo Roberto

doi:10.1016/j.compscitech.2005.03.005

Cited by 62 publications

(31 citation statements)

References 9 publications

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“…In addition, TiB creates minimal residual stresses due to similarity of thermal expansion coefficient and good crystallographic interfaces with the titanium matrix [11][12][13]. The effect of TiB on the strength properties of Ti-based matrix was either as good as, if not better than, most widely used reinforcements such as TiC or Al 2 O 3 [7,14].…”

Section: Introductionmentioning

confidence: 83%

Effect of High-Pressure Torsion on Structure and Microhardness of Ti/TiB Metal–Matrix Composite

Zherebtsov

Ozerov

Stepanov

et al. 2017

Metals

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Effect of high-pressure torsion (HPT) at 400 • C on microstructure and microhardness of a Ti/TiB metal-matrix composite was studied. The starting material was produced by spark plasma sintering of a mixture of a pure Ti and TiB 2 (10 wt %) powders at 1000 • C. The microstructure evolution during HPT was associated with an increase in dislocation density and substructure development that resulted in a gradual microstructure refinement of the Ti matrix and shortening/redistribution of TiB whiskers. After five revolutions, a nanostructure with (sub) grain size of~30 nm was produced in Ti matrix. The microhardness increased with strain attaining the value~520 HV after five revolutions. The contribution of different hardening mechanisms into the hardness of the Ti/TiB metal-matrix composite was quantitatively analyzed.

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Section: Introductionmentioning

confidence: 83%

Effect of High-Pressure Torsion on Structure and Microhardness of Ti/TiB Metal–Matrix Composite

Zherebtsov

Ozerov

Stepanov

et al. 2017

Metals

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“…Titanium (Ti) and its alloys, due to high specific strength, sufficient stiffness, and excellent corrosion resistance, have been widely used in the aeronautical, chemical, and biomedical industries [1,2]. However, the limited wear resistance of Ti is a serious concern for the application environments where abrasive and erosion phenomena exist [3].…”

Section: Introductionmentioning

confidence: 99%

Novel Ti-Based Nanocomposites by Selective Laser Melting (SLM) Additive Manufacturing (AM): Tailored Nanostructure and Performance

2015

Laser Additive Manufacturing of High-Performance Materials

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Selective laser melting (SLM) additive manufacturing (AM) process was used to produce nanocrystalline TiC-reinforced Ti matrix bulk-form nanocomposites. The influences of laser energy density on densification activity, microstructural feature, nanohardness, and wear behavior of SLM-processed parts were comprehensibly studied to improve the controllability SLM process of nanomaterials. The TiC reinforcement in SLM-processed nanocomposites typically had a unique nanoscale lamellar structure, which was distinctly different from the initial particulate morphology before SLM. Reasonable physical mechanisms and conditions for the formation of TiC nanostructure reinforcing phase during SLM process were proposed. The microstructural and mechanical properties of SLM-processed TiC/Ti nanocomposite parts were sensitive to the preparation method of the starting nanocomposite powder and the content of TiC nanoparticles. The optimally processed TiC/Ti nanocomposite parts by SLM demonstrated the significantly elevated microhardness and wear performance as relative to the unreinforced Ti parts. IntroductionTitanium (Ti) and its alloys, due to high specific strength, sufficient stiffness, and excellent corrosion resistance, have been widely used in the aeronautical, chemical, and biomedical industries [1,2]. However, the limited wear resistance of Ti is a serious concern for the application environments where abrasive and erosion phenomena exist [3]. Considerable research attempts, accordingly, have focused on the application of various surface modification techniques to prepare ceramic particle reinforced Ti matrix composites (TMCs) coatings to improve surface properties of Ti. In particular, laser processing methods such as laser melt injection [4], laser cladding [5], and laser surface alloying [6] have demonstrated a considerable efficiency in preparing high-performance TMCs coatings. Laser processing normally offers high heating/cooling rates (10 3 -10 8 K/s) for the development of nonequilibrium phases with fine-grained microstructures and novel properties [1]. Furthermore, TMCs have been realized as bulk-form components, typically through powder metallurgy (PM) [7] and casting [8] methods, and afford more significant advantages in industrial applications.

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“…1(b), 1(d), and 1(f)), which may have contributed to their low elongation behavior, because the clustered TiC particles can constrain the matrix plastic flow to produce increased stresses in the vicinity of the clustered particles and high triaxiality in the matrix between the particles, as affirmed by other researchers. [37][38][39] In fact, this is a rather common phenomenon observed in Ti-based alloys reinforced with low-volume TiC particles. 31,37,40) It is of particular interest to note that the average thickness of platelet, known to have a large effect on the mechanical properties of Ti-6Al-4V alloys, 24,28,30) was not reflected clearly in the hardness measurement results of Monolithic 1-3 ( Fig.…”

Section: Mechanical Properties At Ambient Temperaturementioning

confidence: 99%

“…[37][38][39] In fact, this is a rather common phenomenon observed in Ti-based alloys reinforced with low-volume TiC particles. 31,37,40) It is of particular interest to note that the average thickness of platelet, known to have a large effect on the mechanical properties of Ti-6Al-4V alloys, 24,28,30) was not reflected clearly in the hardness measurement results of Monolithic 1-3 ( Fig. 3) nor in their tensile behaviors (Fig.…”

Section: Mechanical Properties At Ambient Temperaturementioning

confidence: 99%

Influence of Processing on the Mechanical Properties of Ti-6Al-4V-Based Composites Reinforced with 7.5 mass% TiC and 7.5 mass% W

Choe

Abkowitz²,

Abkowitz³

2008

Mater. Trans.

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7.5 mass% TiC and 7.5 mass% W powder blends were densified with Ti-6Al-4V blends by combined cold and hot isostatic pressing (CHIP) method to result in three types of composites with differing processing histories, namely hot isostatic pressing (HIPping), extrusion, and casting, which were compared with their monolithic counterparts. Tensile and microhardness tests, along with compressive testing, were carried out to investigate the mechanical properties of powder metallurgy (P/M) Ti-6Al-4V-7.5%TiC-7.5%W composites at ambient temperature. Dissolution of W powder in the Ti-6Al-4V matrix during consolidation seems to be limited by the presence of TiC particles, which can in turn influence mechanical properties of the composites. Cast Ti-6Al-4V-7.5%TiC-7.5%W composite exhibits superior hardness, yield strength, and tensile strength, with a decrease in ductility, compared to its monolithic counterpart and other composites.

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Microstructural and mechanical characterisation of a Ti6Al4V/TiC/10p composite processed by the BE-CHIP method

Cited by 62 publications

References 9 publications

Effect of High-Pressure Torsion on Structure and Microhardness of Ti/TiB Metal–Matrix Composite

Effect of High-Pressure Torsion on Structure and Microhardness of Ti/TiB Metal–Matrix Composite

Novel Ti-Based Nanocomposites by Selective Laser Melting (SLM) Additive Manufacturing (AM): Tailored Nanostructure and Performance

Influence of Processing on the Mechanical Properties of Ti-6Al-4V-Based Composites Reinforced with 7.5 mass% TiC and 7.5 mass% W

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