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Strengthening mechanisms in alloys
Proceedings of the Indian Academy of Sciences Section C: Engineering Sciences, 1980Metals 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
1975Strengthening 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 +2 more
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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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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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Strengthening Mechanisms in Fatigue
1970The present state of knowledge of the role of metallurgical structure in the achievement of high fatigue resistance is critically examined and the application of such knowledge is discussed. At the present time resistance to fatigue is best characterized in terms of phenomenological parameters such as the cyclic strain hardening exponent. The effect of
CE Feltner, P Beardmore
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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 +7 more
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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 +7 more
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Mechanical Properties and Strengthening Mechanisms
2011Abstract 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, 1981The 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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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 +2 more
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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 +2 more
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Strength and Strengthening Mechanisms
1984The strength of a material depends on various intrinsic and extrinsic factors. Although the most important is the chemical composition, the properties can be manipulated by altering the structure. Various mechanical, thermal, and surface treatments are used to create the desired balance of strength, hardness, and ductility.
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Substructure strengthening mechanisms
Metallurgical Transactions A, 1977The 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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