Microstructure and mechanical properties of hybrid fabricated Ti–6.5Al–3.5Mo–1.5Zr–0.3Si titanium alloy by laser additive manufacturing

Zhu, Yanyan; Li, Jia; Tian, Xiangjun; Wang, Huaming; Liu, Dong

doi:10.1016/j.msea.2014.04.019

Cited by 130 publications

(34 citation statements)

References 28 publications

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“…According to the theory of contact mechanics [22], the compression of spherical particle is similar to an inverse indentation, and thus the H c of the haze particles can be seen roughly as their hardness. For comparison, Vickers hardness of frequently used metals and alloys in industry, such as steels in bearings, superalloys in aircraft, have been shown in Figure 5(a) (red color) [12,[23][24][25][26][27]. It is obvious that the H c of iron-rich and fly ash particles are larger or at least comparable to the hardness of frequently used metals or alloys in industry ( Figure 5(a), red color).…”

Section: Resultsmentioning

confidence: 98%

In situ study of the mechanical properties of airborne haze particles

Ding

Han

et al. 2015

Sci. China Technol. Sci.

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Particulate pollution has raised serious concerns regarding its potential impacts on human health in developing countries. However, much less attention has been paid to the threat of haze particles to machinery and industry. By employing a state-of-the-art in situ scanning electron microscope compression testing technique, we demonstrate that iron-rich and fly ash haze particles, which account for nearly 70% of the total micron-sized spherical haze particles, are strong enough to generate abrasive damage to most engineering alloys, and therefore can generate significant scratch damage to moving contacting surfaces in high precision machineries. Our finding calls for preventive measures to protect against haze related threat.haze particle, hardness, abrasive damage, precision industry Citation:Ding M S, Han W Z, Li J, et al. In situ study of the mechanical properties of airborne haze particles.

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Section: Resultsmentioning

confidence: 98%

In situ study of the mechanical properties of airborne haze particles

Ding

Han

et al. 2015

Sci. China Technol. Sci.

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“…Unlike the conventional material machining methods, AM/3DP possesses the advantages of creating dense parts directly from the feedstock (typically powder materials) in an entirely opposite philosophy, i.e., material incremental manufacturing [1][2][3][4][5]. Due to the high freedom of geometrical design and process manipulation, AM/3DP exhibits the outstanding capability of net-shaping user-defined three-dimensional parts having arbitrary configurations [6][7][8][9][10]. Laser metal deposition (LMD) (also known as laser engineered net shaping, LENS®), as a typical AM/3DP process combining laser cladding and rapid prototyping, has demonstrated its high feasibility in: (i) rapid manufacturing and repairing/re-manufacturing parts with complex geometries; and (ii) preparing coatings to modify surface properties of components [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Laser additive manufacturing of ultrafine TiC particle reinforced Inconel 625 based composite parts: Tailored microstructures and enhanced performance

Chen

Dai

et al. 2015

Materials Science and Engineering: A

134

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“…In titanium welds, hydrogen is reported to be the main source 12 for generation of the gas porosity [16]. Contamination of the weld parts by grease, oil, and dirt can supply hydrogen for gas porosity formation.…”

Section: Microstructure Observation Across the Weldmentioning

confidence: 99%

“…As discussed above, the mechanical property and microstructure of several laser or electron beam welded Ti alloys such as Ti64 [11], Ti5553 [9], and Ti-6.5Al-3.5Mo-1.5Zr-0.3Si [12] have been well investigated and reported in the literature. However, little data are available in literature on the microstructure and mechanical properties of laser welded Ti6242 and even 4 less on the variation in the chemical composition across the weld.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties and microstructure of laser welded Ti–6Al–2Sn–4Zr–2Mo (Ti6242) titanium alloy

Chamanfar

Pasang

Ventura

et al. 2016

Materials Science and Engineering: A

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Room temperature tensile properties and microhardness of a laser welded Ti-6Al-2Sn-4Zr-2Mo (Ti6242) titanium alloy sheet were examined and correlated to the microstructure evolution across the weld. Tensile testing integrated with the optical image correlation Instron® system indicated that the average yield strength (YS), ultimate tensile strength (UTS), and total elongation of the weldment were respectively 88 %, 87 %, and 69 % of the corresponding base material (BM) values. Electron probe microanalysis (EPMA) demonstrated a uniform distribution of the main alloying elements across the weld. The hardness raised increasingly from the BM toward the heat affected zone (HAZ) and the fusion zone (FZ) due to mainly a higher  volume fraction in HAZ and acicular ' martensite formation in the FZ. Because of the higher hardness of the HAZ and FZ, a higher YS for the weldment relative to the BM would be expected. However, the lower YS as well as the lower UTS of the weldment can be explained by 2 presence of some porosity and underfill in the FZ. The lower total elongation of the weldment compared to the BM can be related to the higher hardness of the HAZ and FZ.

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Microstructure and mechanical properties of hybrid fabricated Ti–6.5Al–3.5Mo–1.5Zr–0.3Si titanium alloy by laser additive manufacturing

Cited by 130 publications

References 28 publications

In situ study of the mechanical properties of airborne haze particles

In situ study of the mechanical properties of airborne haze particles

Laser additive manufacturing of ultrafine TiC particle reinforced Inconel 625 based composite parts: Tailored microstructures and enhanced performance

Mechanical properties and microstructure of laser welded Ti–6Al–2Sn–4Zr–2Mo (Ti6242) titanium alloy

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