Phase transformations in XDTM TiB2-reinforced near-γ Ti48Al2Nb2Mn

Guillard, S.

doi:10.1016/0921-5093(94)90902-4

Cited by 17 publications

(2 citation statements)

References 20 publications

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“…Secondly, the solubility limit of boron in titanium alloys is extremely low. TiB precipitates will be formed among grain boundaries [13][14]. These TiB precipitates will serve as obstacles to the grain growth via Zener pinning during the subsequent hot-working process, such as hot-rolling and heat treatment etc.…”

Section: Resultsmentioning

confidence: 99%

Effect of Trace Boron on Microstructure and Mechanical Properties of Ti-9V-3Al-3Cr-3Zr-3.5Mo Alloy

Liu

Qing

Yang

et al. 2011

AMR

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The effects of trace boron on microstructure and mechanical properties of β type Ti-9V-3Al-3Cr-3Zr-3.5Mo (wt. %) alloy have been investigated in this study. Upon the addition of 0.02 wt. % boron, the grain size of the B-modified alloy was almost four times smaller than that of the B-free alloy. Accordingly, the tensile strength and elongation of B-modified alloy increased from 712 MPa and 14.6 % to 813 MPa and 17.9 %, respectively, mainly due to the effect of grain refinement.

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Section: Resultsmentioning

confidence: 99%

Effect of Trace Boron on Microstructure and Mechanical Properties of Ti-9V-3Al-3Cr-3Zr-3.5Mo Alloy

Liu

Qing

Yang

et al. 2011

AMR

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“…The observation of grain refinement in Ti48Al2Mn2Nb by boron addition can be dated back to many years ago. Guillard and Rack showed that in investment cast 16mm bars the microstructure of Ti48Al2Mn2Nb was changed from columnar to fine equiaxed lamellar when B concentration was at/over 0.69% [31] and the grain refinement was indeed caused by boron addition, as proven by many studies in the following years. [12].…”

Section: Grain Refinementmentioning

confidence: 89%

Solidification and grain refinement in Ti(48–50)Al2Mn2Nb1B alloys

Liu

2018

Intermetallics

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Two TiAl-based alloys, Ti48Al2Mn2Nb1B and Ti50Al2Mn2Nb1B, were prepared via conventional ingot melting and unidirectional solidification (Bridgman process) to investigate their solidification behaviour and the effect of boron addition on grain refinement. Both of them are found to be  solidifying alloys. Their microstructures are refined, featuring fine and randomly oriented lamellar colonies about 150μm in size, in conventional ingots but the unidirectionally solidified alloys still have columnar microstructures. The entirely different grain refinement behaviour in ingots and Bridgman samples gave rise to the notion that the enhanced  nucleation from the liquid is the key to grain refinement in the two  solidifying alloys although the specific mechanisms are yet to identify.

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Determination of activation energy of phase transformation and recrystallization using a modified kissinger method

Sha

2001

Metall Mater Trans A

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Phase transformations in XDTM TiB2-reinforced near-γ Ti48Al2Nb2Mn

Cited by 17 publications

References 20 publications

Effect of Trace Boron on Microstructure and Mechanical Properties of Ti-9V-3Al-3Cr-3Zr-3.5Mo Alloy

Effect of Trace Boron on Microstructure and Mechanical Properties of Ti-9V-3Al-3Cr-3Zr-3.5Mo Alloy

Solidification and grain refinement in Ti(48–50)Al2Mn2Nb1B alloys

Determination of activation energy of phase transformation and recrystallization using a modified kissinger method

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