Martensitic microstructures and mechanical properties of as-quenched metastable β-type Ti–Mo alloys

Wang, C. H.; Yang, Cheng; Liu, M.; Li, X.; Hu, Pengfei; Russell, Alan M.; Cao, Guanghui

doi:10.1007/s10853-016-9976-6

Cited by 44 publications

(10 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From crystallographic standpoint, transformation twin structure occurs as a result of a lattice invariant shear (LIS) to accommodate the martensitic transformation strain [41,42]. Several transformation twinning modes have been reported in orthorhombic-αʺ martensite structure, namely, {111} αʺ -type I [19,[22][23][24], <211> αʺ -type II [19,25], and {011} αʺ -compound twinning [19,26,27]. In particular, Inamura et al [19] have proposed an approach to predict the transformation twinning system for LIS by the infinitesimal deformation theory [43].…”

Section: {111} α" -Type I Transformation Twinningmentioning

confidence: 99%

“…Extensive studies have been conducted on the crystal structure of αʺ martensite in β-Ti alloys [17][18][19][20]. These studies reveal that αʺ martensite contains internal twin structure, namely, transformation twin structure, which is associated with transformation strain accommodation from β to αʺ martensite [19,[21][22][23][24]. Different transformation twinning modes have been reported such as {111} αʺ -type I [19,[22][23][24], <211> αʺ -type II [19,25], and {011} α" -compound twinning modes [19,26,27].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Twinning behavior of orthorhombic-α” martensite in a Ti-7.5Mo alloy

Gutiérrez-Urrutia

Emura

et al. 2019

Science and Technology of Advanced Materials

View full text Add to dashboard Cite

Deformation microstructure of orthorhombic-α" martensite in a Ti-7.5Mo (wt.%) alloy was investigated by tracking a local area of microstructure using scanning electron microscopy, electron back-scattered diffraction, and transmission electron microscopy. The as-quenched α" plates contain {111} α"-type I transformation twins generated to accommodate transformation strain from bcc-β to orthorhombic-α" martensite. Tensile deformation up to strain level of 5% induces {112} α"-type I deformation twins. The activation of {112} α"-type I deformation twinning mode is reported for the first time in α" martensite in β-Ti alloys. {112} α"-type I twinning mode was analyzed by the crystallographic twinning theory by Bilby and Crocker and the most possible mechanism of atomic displacements (shears and shuffles) controlling the newly reported {112} α"-type I twinning were proposed.

show abstract

Section: {111} α" -Type I Transformation Twinningmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Twinning behavior of orthorhombic-α” martensite in a Ti-7.5Mo alloy

Gutiérrez-Urrutia

Emura

et al. 2019

Science and Technology of Advanced Materials

View full text Add to dashboard Cite

show abstract

“…Mo is also a cost-effective (compared with V) BCC phase stabilizer in titanium alloys [ 15 ]. Some references [ 16 , 17 ] indicated Mo could help obtain fine-grain microstructure during the sintering process and increase the strength, ductility, and creep resistance of titanium alloys. Furthermore, a relatively desirable combination of strength and ductility could be obtained in PM Ti–Mo binary alloys when the amount of Mo was 3 wt.% [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Predicting Workability of a Low-Cost Powder Metallurgical Ti–5Al–2Fe–3Mo Alloy Using Constitutive Modeling and Processing Map

Pan

Liu

et al. 2021

Materials

View full text Add to dashboard Cite

A low-cost titanium alloy (Ti–5Al–2Fe–3Mo wt.%) was designed and fabricated by blended elemental powder metallurgy (BEPM) process. The high-temperature deformation behavior of the powder metallurgical Ti–5Al–2Fe–3Mo wt.% (PM-TiAlFeMo) alloy was investigated by hot compression tests at temperatures ranging from 700 to 1000 °C and strain rates ranging from 0.001 to 10 s−1. The flow curves were employed to develop the Arrhenius-type constitutive model in consideration of effects of deformation temperature, strain rate, and flow stress. The value of activation energy (Q) was determined as 413.25 kJ/mol. In order to describe the workability and predict the optimum hot processing parameters of the PM-TiAlFeMo alloy, the processing map has been established based on the true stress–true strain curves and power dissipation efficiency map. Moreover, microstructure observations match well with the analyses about deformation mechanisms, revealing that dynamic recovery and dynamic recrystallization are dominant softening mechanisms at relatively high temperatures. However, the kinking and breaking of microstructure prefer to occur at relatively low temperatures.

show abstract

“…), metastable b-Ti alloys can be produced by the fast cooling process following the heating treatment above T b (b transus temperature). A series of b-Ti alloys have been developed, such as Ti-Mo, [5][6][7][8][9][10][11][12] Ti-Nb, 13 Ti-Mo-Nb, 14 and Ti-Nb-Zr-Fe (Ta). 15 Among these alloys, metastable Ti-Mo alloys receive much attention because of the remarkable b-stabilizing effect and the favorable safety of the Mo element.…”

Section: Introductionmentioning

confidence: 99%

“…According to Bania et al, 7 only 10 wt% of Mo content is needed to fully stabilize the b phase at room temperature in a quenched Ti-Mo alloy. Ho et al 5 found that the cast binary Ti- (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) wt% Mo alloys show metastable b-Ti growth, while those with less than 10 wt% Mo content exhibit a martensitic transformation from the b phase to orthorhombic a 00 or hexagonal a 0 phase.…”

Section: Introductionmentioning

confidence: 99%