Mechanical Properties of Ti‐6Al‐4V Rods Produced by Powder Compact Extrusion

Singh, Ajit Pal; Gabbitas, Brian; Torrens, Rob; Yang, Fei; Mukhtar, Aamir

doi:10.1002/9781118889879.ch73

Cited by 2 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…variations in YS, UTS along and ductility. Overall tensile property data presented here is either similar or inferior compared to the data reported in literature before[4,7,8,13,14] .…”

supporting

confidence: 45%

“…The restrictions on the use of titanium for more general engineering applications, because of its high cost, is well known and requires no further comment [1][2][3]. Thermomechanical powder consolidation (TPC) processes, such as powder compact extrusion (PCE), are capable of costeffectively producing near fully dense material with a wide range of compositions, microstructures and properties [4][5][6][7][8]. PCE combines traditional powder metallurgy and conventional extrusion technology along with the derived benefits of both processes.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Processing, Microstructures and Properties of a Ti-6Al-4V Extrusion Produced by an Industrial Scale Setup

Singh

Yang

Torrens

et al. 2018

KEM

Self Cite

View full text Add to dashboard Cite

In this paper, a Ti-6Al-4V rectangular bar was successfully produced from a 5kg blended powder mixture using an industrial scale extrusion facility. The elemental hydride-dehydride (HDH) titanium and 60Al-40V master alloy mixture was warm pressed and vacuum sintered prior to β extrusion in air. The as-processed material was characterised for compositional homogeneity, oxygen pickup, microstructure, tensile properties and fracture behavior. Variation in microstructure and properties along the length of the extruded bar were also studied. It was found that oxygen pickup mainly occurred during vacuum sintering of the green billet and consequently the as-extruded material had an oxygen content of 0.55 wt.%. The processed material had a typical lamellar morphology with some evidence of micro-cracks at high magnification. A significant deviation in prior β grain and α colony sizes was observed along the length of the bar, due to variations in extrusion temperature and cooling rate. Both grains and colonies became finer as the location changed from the tip of the extruded bar to the back end. The as-processed material had ultimate tensile strength in the range of 1068-1268 MPa and elongation to fracture of 1.2-4.5%, mainly due to the high oxygen content and non-optimised microstructure. Fractographic analysis was consistent with the variation in mechanical performances obtained.

show abstract

“…variations in YS, UTS along and ductility. Overall tensile property data presented here is either similar or inferior compared to the data reported in literature before[4,7,8,13,14] .…”

supporting

confidence: 45%

Section: Introductionmentioning

confidence: 99%

Processing, Microstructures and Properties of a Ti-6Al-4V Extrusion Produced by an Industrial Scale Setup

Singh

Yang

Torrens

et al. 2018

KEM

Self Cite

View full text Add to dashboard Cite

show abstract

Heat Treatment, Impact Properties, and Fracture Behaviour of Ti-6Al-4V Alloy Produced by Powder Compact Extrusion

et al. 2019

View full text Add to dashboard Cite

The mechanical properties of titanium and titanium alloys are very sensitive to processing, microstructure, and impurity levels. In this paper, a blended powder mixture of Ti-6Al-4V alloy was consolidated by powder compact extrusion that involved warm compaction, vacuum sintering, and hot extrusion. The as-processed material with an oxygen content of 0.34 wt.% was subjected to various annealing treatments. The impact toughness of heat-treated material was determined using Charpy V-notch impact testing at room temperature. An emphasis was placed on establishing a relationship among fracture behaviour, microstructure, and the resulting properties of tested material. From the results, it is apparent that the highest impact toughness value of 19.3 J was achieved after α/β annealing and is comparable with typical values given in the literature for wrought Ti-6Al-4V. In terms of fracture behaviour, it is quite apparent that the crack propagation behaviour of powder-produced material is rather complex compared with the limited amount of data reported for ingot counterparts.

show abstract

Mechanical Properties of Ti‐6Al‐4V Rods Produced by Powder Compact Extrusion

Cited by 2 publications

References 3 publications

Processing, Microstructures and Properties of a Ti-6Al-4V Extrusion Produced by an Industrial Scale Setup

Processing, Microstructures and Properties of a Ti-6Al-4V Extrusion Produced by an Industrial Scale Setup

Heat Treatment, Impact Properties, and Fracture Behaviour of Ti-6Al-4V Alloy Produced by Powder Compact Extrusion

Contact Info

Product

Resources

About