Hydrogen Internal Friction Peak in Amorphous Zr-Cu-Al-Si Alloys

Mizubayashi, H.; Ishikawa, Yoshinori; Tanimoto, H.

doi:10.2320/matertrans.43.2662

Cited by 14 publications

(17 citation statements)

References 31 publications

(51 reference statements)

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“…A noteworthy finding is the increase of tensile fracture strength for the specimen even in higher hydrogen content up to about 46 at%. Similar increase in the fracture strength has been reported for the amorphous Zr-Cu-Al and Zr-Cu-Al-Si alloys 16,17) with hydrogen content up to about 20 at%. TiNi-Cu metallic glasses showed a gradual decrease in fracture strength after absorbing hydrogen up to about 25 at%, and it decreased significantly in the higher hydrogen content beyond 30 at%.…”

Section: Resultssupporting

confidence: 66%

Mechanical Properties of Melt-Spun Amorphous Ni-Nb-Zr Alloys after Hydrogen Charging

et al. 2006

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The effect of pre-charged hydrogen on the mechanical behavior of melt-spun amorphous Ni-Nb-Zr alloys was investigated. A substantial increase in the tensile fracture strength is observed even in hydrogen content up to about 46 at%. The Vickers hardness gradually increases with an increase in hydrogen content up to about 27 at%, and keeps almost the same value in the higher content more than 46 at%. It might be said that the amorphous (Ni 0:6 Nb 0:4 ) 70 Zr 30 alloy is not embrittled distinctly even in the high hydrogen content at room temperature. The amorphous alloy ribbons always curled during hydrogenation and the outer side of the curled ribbon corresponds to the roll side due to preferential absorption of hydrogen. XPS study revealed that the zirconium content in the surface film of the roll side surface is lower than that of the top side surface. The difference in surface composition as well as higher surface roughness of the roll side surface seems responsible for the preferential hydrogen absorption.

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Section: Resultssupporting

confidence: 66%

Mechanical Properties of Melt-Spun Amorphous Ni-Nb-Zr Alloys after Hydrogen Charging

et al. 2006

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“…(2), and redrawn on the lnðT p À T p0 Þ vs. C H plot in Figures 3(b) and 3(c), where the linear relationships between lnðT p À T p0 Þ and C H are seen. The parameters, ÁT p , H and T p0 , found for the observed data and the reported data 5,6,21,[23][24][25][26][27] for the various metallic glasses are shown in Figs. 4(a) …”

Section: Resultsmentioning

confidence: 94%

“…3,4) As the peak height increases to the high-damping region as high as 10 À2 the peak temperature in most metallic glasses becomes much lower than room temperature, but the peak temperature in some Zr-Cu base metallic glasses remains near room temperature. Such Zr-Cu base metallic glasses are a potential high-damping and high-strength material, [5][6][7] where more knowledge on the hydrogen concentration dependencies of the peak temperature and the peak height and the effect of alloying elements on these quantities is required.…”

Section: Introductionmentioning

confidence: 99%

“…5,6) Then, the HIFP in metallic glasses has been revisited to seek a new high-damping and high-strength material, [5][6][7][8][9][10][11][12][13][14][15][16][17] where the peak temperature, T p , and the peak height, Q À1 p , are measures of the material performance. Experimentally, the peak temperature and the peak height of the HIFP in metallic glasses show a decrease and an increase with increasing hydrogen concentration, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Zr-Cu Base Metallic Glasses by means of Hydrogen Internal Friction Peak

et al. 2007

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The hydrogen internal friction peak in Zr 50 -metallic glasses (Zr 50 Cu 50 , Zr 50 Cu 40 Al 10 and Zr 50 Cu 35 Al 10 Ni 5 ) was studied. The hydrogen internal friction peak was shifted exponentially to lower temperatures with increasing hydrogen concentration similarly to other Zr-Cu base metallic glasses reported in the literature. The peak height increased in proportion to the square-root of hydrogen concentration. These results were discussed in the view point of the hydrogen induced structural relaxation in these metallic glasses.

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“…Especially, hydrogen-induced internal friction of hydrogenated glassy alloys is well investigated. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] For example, Mizubayashi et al investigated the hydrogeninduced internal friction behavior of the Zr-based hydrogenated glassy alloys [12][13][14][15] and Hasegawa et al investigated that of the Ti-rich ones. [16][17][18][19][20][21][22] This internal friction is originated from the relaxation process of the hydrogen atoms absorbed in the glassy structure because hydrogen is an interstitial-type atom.…”

Section: Introductionmentioning

confidence: 99%

Internal Friction of Nitrogen-Doped Zr-Based Glassy Composite Alloy

et al. 2007

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Internal friction of Zr-based glassy composite alloys containing dispersed-ZrN particles, which were prepared by a powder compact melting and liquid-quenching process using Zr-Al-Ni-Cu glassy alloy and AlN powders as the starting materials, has been investigated using a reed method over the temperature range of $90-350 K. It should be noted that a broad multi-composed peak was observed around 260 K. The peak internal friction was about 3 Â 10 À3 . It was also noteworthy that the so-called ÁM effect of the Young's modulus in its temperature dependence was observed. In addition, the internal friction at the peak temperature depended little on the strain amplitude in the range of about $1 Â 10 À6 -$2 Â 10 À4 . These results indicate that the observed internal friction peak is related to the relaxation process. Since the hydrogen content in the sample was very low (0.24 at%H), the observed internal friction peak is suggested to be induced by the interstitially doped nitrogen in the glassy phase.

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Hydrogen Internal Friction Peak in Amorphous Zr-Cu-Al-Si Alloys

Cited by 14 publications

References 31 publications

Mechanical Properties of Melt-Spun Amorphous Ni-Nb-Zr Alloys after Hydrogen Charging

Mechanical Properties of Melt-Spun Amorphous Ni-Nb-Zr Alloys after Hydrogen Charging

Characterization of Zr-Cu Base Metallic Glasses by means of Hydrogen Internal Friction Peak

Internal Friction of Nitrogen-Doped Zr-Based Glassy Composite Alloy

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