Results 251 to 260 of about 3,758,516 (308)

Strengthening mechanisms in alloys

Proceedings of the Indian Academy of Sciences Section C: Engineering Sciences, 1980
Metals can be strengthened by methods appropriately combined to meet the operating conditions. In this ‘alloy design’, effort, we are guided by semi-quantitative relations that have been developed over the years and which relate the efficacy of the strengthening methods to the deformation modes.
T. Balakrishna Bhat, V. S. Arunachalam
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Strengthening Mechanisms in Sapphire

1975
Strengthening of sapphire by work hardening, solid solution hardening and precipitation hardening is described. Examination of the dislocation structures in pure sapphire deformed by basal glide has led to the development of a semi-quantitative work hardening model; edge dipoles, formed by trapping of dislocations on parallel slip planes, are the ...
B. J. Pletka, T. E. Mitchell, A. H. Heuer   +2 more
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Strengthening mechanisms in Elgiloy

Journal of Materials Science, 1984
The effects of cold-working and age-hardening on the microstructure of Elgiloy (composition in wt %, 40 Co, 20 Cr, 15 Ni, 7 Mo, 2 Mn, 0.1 C, balance Fe) have been established. 36% and 72% cold reduction of the solution treated (ST) alloy (f c c) produced a network of thin f c c deformation twins and h c pe-martensite platelets.
M. Assefpour-Dezfuly, W. Bonfield
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Strengthening mechanisms in Cu3Au

Acta Metallurgica, 1978
The effect of temperature and strain rate on the mechanical behavior of originally disordered and ordered polycrystalline Cu3Au was investigated in the range 273–648 K. While stress-strain curves exhibit serrations identical to those attributable to dynamic strain aging, no correlation seems to exist between the presence of the serrations and the yield
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Strengthening Mechanisms

2010
Abstract This chapter discusses the metallurgical changes that occur and the improvements that can be achieved in superalloys through solid-solution hardening, precipitation hardening, and dispersion strengthening. It also explains how further improvements can be achieved through the control of grain structure, as in columnar-grained ...
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Mechanical behavior and strengthening mechanisms in ultrafine grain precipitation-strengthened aluminum alloy

Acta Materialia, 2014
To provide insight into the relationships between precipitation phenomena, grain size and mechanical behavior in a complex precipitation-strengthened alloy system, Al 7075 alloy, a commonly used aluminum alloy, was selected as a model system in the present study. Ultrafine-grained (UFG) bulk materials were fabricated through cryomilling, degassing, hot
Kaka Ma, Haiming Wen, Tao Hu, Troy D. Topping, Dieter Isheim, David N. Seidman, Enrique J. Lavernia, Julie M. Schoenung   +7 more
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Mechanical Properties and Strengthening Mechanisms

2011
Abstract This chapter introduces the concepts of mechanical properties and the various underlying metallurgical mechanisms that can be used to alter the strength of materials. The mechanical properties discussed include elasticity, plasticity, creep deformation, fatigue, toughness, and hardness.
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Strengthening mechanism of bonded alumina crowns

The Journal of Prosthetic Dentistry, 1981
The results of this study suggest that the strengthening of aluminous porcelain with Sn-plated Pt is an effect of (1) a chemical interaction involving diffusion and dissolution of Sn-oxide in the glass phase of the porcelain and (2) a better wetting of te Sn-plated substrate by the porcelain. This conclusion supports and confirms the earlier hypothesis
N K, Sarkar, E E, Jeansonne
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Substructure strengthening mechanisms

Metallurgical Transactions A, 1977
The mechanisms which give rise to substructural strength originate in the dislocation character of the substructure boundary, in the size of sources for continued slip which the boundaries permit, and in the size of the cells or subgrains. The interrelation of these factors must be considered in obtaining a general view of the strengthening.
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An analysis of strengthening mechanisms in a mechanically alloyed, oxide dispersion strengthened iron aluminide intermetallic

Acta Materialia, 2002
An iron aluminide alloy of base composition Fe-40Al has been prepared by mechanical alloying and processed using a variety of powder consolidation methods and heat treatments to produce a range of grain sizes and oxide dispersoid sizes. The strengths of these materials have been determined at room temperature and related to the various aspects of ...
Muñoz-Morris, M. Antonia, Oca, C. G., Morris, David G.   +2 more
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