INTERNAL FRICTION STUDIES ON HYDROGEN IN SOLID SOLUTION IN V-Nb ALLOYS

Experiments have been carried out to investigate the influence of deformation on the internal friction of iron measured at the carbon peak. As a result of deformation the internal friction increased and then decreased with time. These changes, corrected for a background change associated with the deformation, were shown to follow a time law predicted for carbon segregation to dislocations. It is concluded that the amount of carbon in random solid solution is increased by the deformation. By analyzing the rate of decrease of internal friction following deformation in terms of strain-aging theory the final dislocation densities were determined. The results also indicate that in some cases the carbon put into solution by the deformation was initially present in the form of iron carbide particles.

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Internal friction study on the existence of oxygen pairs in interstitial solid solution of tantalum with oxygen

Acta Metallurgica ◽

10.1016/0001-6160(81)90057-2 ◽

1981 ◽

Vol 29 (6) ◽

pp. 1055-1060 ◽

Cited By ~ 44

Author(s):

M. Weller ◽

J.X. Zhang ◽

G.Y. Li ◽

T.S. Kê ◽

J. Diehl

Keyword(s):

Solid Solution ◽

Internal Friction ◽

Interstitial Solid Solution ◽

Friction Study

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Solid solution hardening evaluated from amplitude-dependent internal friction in polycrystalline copper alloys

Scripta Materialia ◽

10.1016/s1359-6462(99)00139-6 ◽

1999 ◽

Vol 41 (2) ◽

pp. 181-185 ◽

Cited By ~ 4

Author(s):

Naoki Ide ◽

Motochika Yamashita ◽

Shigeru Asano

Keyword(s):

Solid Solution ◽

Internal Friction ◽

Copper Alloys ◽

Solid Solution Hardening ◽

Polycrystalline Copper ◽

Solution Hardening

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Internal Friction and Microstructure of Ti and Ti-Mo Alloys Containing Oxygen

Archives of Metallurgy and Materials ◽

10.1515/amm-2016-0011 ◽

2016 ◽

Vol 61 (1) ◽

pp. 25-30 ◽

Cited By ~ 8

Author(s):

J.R.S. Martins ◽

R.O. Araújo ◽

R.A. Nogueira ◽

C.R. Grandini

Keyword(s):

Mechanical Properties ◽

Solid Solution ◽

Wear Resistance ◽

Internal Friction ◽

Good Combination ◽

Relaxation Processes ◽

Mechanical Spectroscopy ◽

Excellent Corrosion Resistance ◽

Low Elastic Modulus ◽

Internal Friction Spectra

Ti-Mo alloys are promising materials for use as biomaterials, because these alloys have excellent corrosion resistance and a good combination of mechanical properties such as fatigue, low elastic modulus, hardness, and wear resistance. The objective of this paper was to study the effect of heavy interstitial atoms on anelastic properties of Ti-Mo alloys using mechanical spectroscopy. The internal friction and Young’s modulus were measured as a function of temperature using dynamic mechanical analyser. The internal friction spectra were brought about by relaxation processes attributed to shortrange stress induced reorientation of interstitial and substitutional complexes in solid solution. It is suggested that the nature of the relaxing entities can be worked out in further research on Ti-Mo single crystals.

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Precipitates and Lüders Elongation in Ferritic Stainless Steels Stabilized with Ti and V

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.194-196.16 ◽

2011 ◽

Vol 194-196 ◽

pp. 16-19 ◽

Cited By ~ 1

Author(s):

Fei Gao ◽

Wei Na Zhang ◽

Zhi Bo Zhang ◽

Zhen Yu Liu ◽

Guo Dong Wang

Keyword(s):

Solid Solution ◽

Internal Friction ◽

Stainless Steels ◽

Low Temperatures ◽

Rolling Process ◽

Ferritic Stainless Steels ◽

Finish Rolling ◽

Friction Measurements ◽

Hot Rolled ◽

Conventional Rolling

The influence of finish rolling temperature on the precipitates and Lüders elongation in ultra purified ferritic stainless steels stabilized with Ti and V has been investigated, in which the hot rolled bands were produced by conventional rolling process and the finish rolling at relatively low temperatures. It was shown that finish rolling at relatively low temperatures promoted the formation of a large number of fine MC precipitates, which were denser in dispersion and finer in size than those formed in conventional rolling process by strain-induced precipitation, and consequently scavenging of interstitial atoms in solid solution, indicating that the finish rolling at relatively low temperatures can be the effective way to significantly reduced Lüders elongation for the final sheets. These results have been confirmed by the internal friction measurements.

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Mechanical Spectra of an Al-12.7Si-0.7Mg Alloy under Extrusion and T6 States

Materials Science Forum ◽

10.4028/www.scientific.net/msf.788.182 ◽

2014 ◽

Vol 788 ◽

pp. 182-186

Author(s):

Ning Yu ◽

Chang Shu He ◽

Dong Wang ◽

Jing Wen Ji ◽

Lin Zhang

Keyword(s):

Solid Solution ◽

Internal Friction ◽

Artificial Aging ◽

Solution Treatment ◽

Internal Friction Peak ◽

Solid Solution Treatment ◽

Mechanical Spectra

Mechanical spectra of an Al-12.7Si-0.7Mg alloy under extrusion and the solid solution treatment followed artificial aging (T6) states were measured at different frequencies. It has been found that their spectra present differences. There was an obvious internal friction peak near to 200°C with increasing the temperature. The value of internal friction presented increase started from 300°Cand height of the peak was low, there existed a peak near to 270°C during the cooling processes in the spectrum for the extrusion state. For the T6 state alloy, no peaks could be observed during the heating processes. With decreasing the temperature, the internal friction peaks were again observed near 200°C and 270°C.

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