The texture and anisotropy of magnesium–zinc–rare earth alloy sheets

http://liu.diva-portal.org/smash/get/diva2:303552/FULLTEXT01

The Mn+1AXn phases: Materials science and thin-film processing

Open literature publications, in the period from 2010 to the end of January 2018, on refractory high entropy alloys (RHEAs) and refractory complex concentrated alloys (RCCAs) are reviewed. While RHEAs, by original definition, are alloys consisting of five or more principal elements with the concentration of each of these elements between 5 and 35 at.%, RCCAs can contain three or more principal elements and the element concentration can be greater than 35%. The 151 reported RHEAs/RCCAs are analyzed based on their composition, processing methods, microstructures, and phases. Mechanical properties, strengthening and deformation mechanisms, oxidation, and corrosion behavior, as well as tribology, of RHEA/RCCAs are summarized. Unique properties of some of these alloys make them promising candidates for high temperature applications beyond Ni-based superalloys and/or conventional refractory alloys. Methods of development and exploration, future directions of research and development, and potential applications of RHEAs are discussed.

Development and exploration of refractory high entropy alloys—A review

The present study contains a critical review of work on the formation of precipitates and intermetallic phases in dilute precipitation hardening Al–Cu–Mg based alloys with and without Li additions. Although many suggestions for the existence of pre-precipitates in Al–Cu–Mg alloys with a Cu/Mg atomic ratio close to 1 have been made, a critical review reveals that evidence exists for only two truly distinct ones. The precipitation sequence is best represented as: supersaturated solid solution→co-clusters→GPB2/S"→S where clusters are predominantly Cu–Mg co-clusters (also termed GPB or GPB I zones), GPB2/S" is an orthorhombic phase that is coherent with the matrix (probable composition Al10Cu3Mg3) for which both the term GPB2 and S" have been used, and S phase is the equilibrium Al2CuMg phase. GPB2/S" can co-exist with S phase before the completion of the formation of S phase. It is further mostly accepted that the crystal structure of S' (Al2CuMg) is identical to the equilibrium S phase (Al2CuMg). Th...

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Precipitates and intermetallic phases in precipitation hardening Al–Cu–Mg–(Li) based alloys

High-temperature structural intermetallics

The largest collection of ternary phase diagrams and related crystal structure data ever assembled can be found in this 10 volume set. Some features of the reference set: 18,000 published diagrams Exhaustive bibliographies by Dr. Prince Includes diagrams from the compilations from the International Programme for Alloy Phase Diagrams 7,380 ternary systems ternary phase diagrams for 3,317 alloy systems Crystallographic data on 7,050 systems Includes liquidus projections, isotherms, isopleths, and pseudobinaries All diagrams were redrawn to uniform standards for easy use and comparison Temperatures given in degrees C and all compositions given in atomic relative orientation of elements is standardized (no rotating or mirroring needed) Angle between composition scales in all horizontal views (projections and isothermal sections) standardized at 60 degrees More than 43,000 citations of included literature most composition scales are identical within a diagram Boundary regions adjusted to critically evaluated binary diagrams

Alan Prince

Papers

Handbook of Ternary Alloy Phase Diagrams