Dynamic strength and failure behavior of titanium alloy Ti-6Al-4V for a variation of heat treatments

Meyer, Lothar; Krüger, Lutz; Sommer, Kristin; Halle, Thorsten; Hockauf, Matthias

doi:10.1007/s11043-008-9060-y

Cited by 50 publications

(28 citation statements)

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“…4b), as reported in Table 2. This is in agreement with previous results [2,4,11] which stated that as the solution treatment temperature in a ? b range decreases, the aphase fraction increases at the expense of b-phase.…”

Section: Microstructural Investigationsupporting

confidence: 94%

“…b transformation temperature for Ti-6Al-4V alloy used in this study was determined to be 987°C using heat-flux differential scanning calorimetry (DSC). This result is in agreement with previous data [1,4,6,8,11]. The microstructure of Ti-6Al-4V alloy after single stage heat treatment (SSHT) from 935°C is shown in Fig.…”

Section: Microstructural Investigationsupporting

confidence: 92%

“…The requirements for outstanding mechanical properties can justify the growing use of Ti-alloys in applications such as the aerospace, automotive, medical, marine, chemical industries, and sporting goods sectors [1][2][3][4][5][6][7][8]. Due to the significant raw-material costs, the manufacture of near net-shape of Ti-alloy components is an attractive field.…”

Section: Introductionmentioning

confidence: 99%

“…Heat treatment is used for improving the properties of the casting parts through microstructural control. The properties of Ti-alloys can be significantly changed through processing as well as heat treatment [1,4,6,[8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Single and Duplex Stage Heat Treatment on the Microstructure and Mechanical Properties of Cast Ti–6Al–4V Alloy

Reda

Nofal

Hussein

2013

Metallogr. Microstruct. Anal.

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The effect of single and duplex stage heat treatment on the microstructure and mechanical properties of cast Ti-6Al-4V alloy was studied. The single stage heat treatment (SSHT) involved solution annealing at 935°C for 10 min followed by water quenching, while the duplex stage heat treatment (DSHT) involved solution annealing at 935°C for 10 min, furnace cooling to 600 and 700°C, followed by isothermal holding for 30 min and subsequent water quenching. The properties characterization was conducted using microstructure investigation along with tensile, hardness, and Charpy impact tests. The impact fracture surfaces were observed using Scanning Electron Microscope. After SSHT, an increase in the tensile strength and hardness at the expense of the tensile elongation and impact toughness was recorded as compared with the as-cast alloy. This is attributed to the formation of a brittle a 0 martensite phase in the microstructure after quenching from 935°C. On the other hand, DSHT enhances the percent elongation and impact toughness over the as-cast alloy and SSHT. The formation of a 0 martensite-free microstructure as well as controlling the composition of the different microstructural constituents during DSHT optimizes the mechanical properties.

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Section: Microstructural Investigationsupporting

confidence: 94%

Section: Microstructural Investigationsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Single and Duplex Stage Heat Treatment on the Microstructure and Mechanical Properties of Cast Ti–6Al–4V Alloy

Reda

Nofal

Hussein

2013

Metallogr. Microstruct. Anal.

View full text Add to dashboard Cite

show abstract

“…Typically, all the Fe present in the alloy is confined to the β-phase [24]. Application of different thermal and mechanical treatments results in a large number of different possible microstructures and properties [25]. The Ti6Al4V used in this study is in the so-called mill-annealed condition, with equiaxed α-grains (97 vol.%, average grain size 11 μm) with small β-grains (3 vol.%, average grain size below 1 μm) dispersed in between (Fig.…”

Section: Methodsmentioning

confidence: 99%