Kinetics of crystallization of titanium based binary and ternary amorphous alloys

Pratap, Arun; Rao, T. Lilly Shanker; Lad, Kirit N.; Dhurandhar, Heena D.

doi:10.1016/j.jnoncrysol.2007.04.011

Cited by 11 publications

(2 citation statements)

References 19 publications

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“…The Cu-Ti system is known to form metallic glass and extensive work on the crystallization behavior of the amorphous phases of this system has been reported in the literature. [41][42][43][44][45][46][47][48][49][50] It may be noted that in the present case, the brazing experiments were carried out using induction heating with a relatively high rate of about 1.667 K/s (100 C/min). The rate of cooling in this case was also very high owing to the fact that only the joining specimens, and not the entire chamber, were heated during brazing.…”

Section: B Phase Formation In the Braze Zonementioning

confidence: 99%

“…[41][42][43][44][45][46][47][48][49][50] Formation of amorphous phase in a wide range of compositions around Cu 50 Ti 50 has been demonstrated using rapid solidification, [41][42][43][44][45][46][47] pulsed laser quenching, [43] and mechanical alloying. [48] The kinetics of crystallization of these alloys were found to be sluggish, and the activation energy for crystallization (Q) was reported to vary between 71.4 and 126 kJ/ mol in the composition range Cu x Ti 1Àx , where 0.35 <x< 0.65 with a maximum at x ¼ 0:55.…”

Section: B Phase Formation In the Braze Zonementioning

confidence: 99%

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Microstructure and Interfacial Reactions During Vacuum Brazing of Stainless Steel to Titanium Using Ag-28 pct Cu Alloy

Laik

Shirzadi

Sharma

et al. 2014

Metall Mater Trans A

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Microstructural evolution and interfacial reactions during vacuum brazing of grade-2 Ti and 304L-type stainless steel (SS) using eutectic alloy Ag-28 wt pct Cu were investigated. A thin Ni-depleted zone of a-Fe(Cr, Ni) solid solution formed on the SS-side of the braze zone (BZ). Cu from the braze alloy, in combination with the dissolved Fe and Ti from the base materials, formed a layer of ternary compound s 2 , adjacent to Ti in the BZ. In addition, four binary intermetallic compounds, Cu 3 Ti 2 , Cu 4 Ti 3 , CuTi and CuTi 2 formed as parallel contiguous layers in the BZ. The unreacted Ag solidified as islands within the layers of Cu 3 Ti 2 and Cu 4 Ti 3 . Formation of an amorphous phase at certain locations in the BZ could be revealed. The b-Ti(Cu) layer, formed due to diffusion of Cu into Ti-based material, transformed to an a-Ti + CuTi 2 eutectoid with lamellar morphology. Tensile test showed that the brazed joints had strength of 112 MPa and failed at the BZ. The possible sequence of events that led to the final microstructure and the mode of failure of these joints were delineated.

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