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RISSheet Orientation Effects on the Hot Formability Limits of Lightweight Alloys
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The formability curves of AZ31B magnesium and 5083 aluminum alloy sheets were constructed using the pneumatic stretching test at two different sets of forming conditions. The test best resembles ...
Growth Instability During Nonuniform Directional Solidification of a Pure Metal Plate
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The singly periodic beam theory of freezing front growth instability in pure metal castings due to Richmond et al., (1990) is extended here to the more general case of a doubly periodic ...
Tool Surface Topographies for Controlling Friction and Wear in Metal-Forming Processes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A conceptual framework is introduced for the design of tool surface topographies in bulk metal forming processes. The objective of the design is to control friction to desired levels while ...
Tensile-Shear Forces and Fracture Modes in Single and Multiple Weld Specimens in Dual-Phase Steels
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this article, weld fracture criteria based upon low strain rate (i.e., ε̇∼10−3–10−2s−1) tensile-shear tests of spot welds in dual-phase (DP) steels DP600, DP780, and DP980 are developed. Three ...
Local Mechanical Properties of a Magnesium Hood Inner Component Formed at Elevated Temperature
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: There is considerable worldwide interest in magnesium (Mg) sheet as a replacement for heavier steel and aluminum alloys in vehicle closure components. As Mg gains acceptance in the automotive ...
Growth Instability During Nonuniform Directional Solidification of Pure Metals
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Solidification of a pure metal against a flat mold surface is examined using a nonuniform thermohypoelastic beam. Heat is removed with a spatially periodic heat flux superimposed onto uniform ...
Strain Accumulation in Polymer Electrolyte Membrane and Membrane Electrode Assembly Materials During a Single Hydration/Dehydration Cycle
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A digital image correlation technique was used to measure drying-induced strains in perfluorosulfonic acid (PFSA) membrane and membrane electrode assembly (MEA) materials which are key components ...
Local Thinning at a Die Entry Radius During Hot Gas-Pressure Forming of an AA5083 Sheet
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Splitting at regions of local thinning below die entry radii is a critically important mechanism of failure in hot gas-pressure forming of sheet materials. Local thinning is controlled by ...
Postanneal Mechanical Properties of Prestrained AA5182-O Sheets
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effects of different prestrain levels, paths, and subsequent annealing on the postannealing mechanical properties of AA5182-O were investigated. Aluminum sheet specimens were prestrained in ...
Boundary Additive Effect on Abrasive Wear During Single Asperity Plowing of a 3004 Aluminum Alloy
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Aluminum forming processes such as rolling, extrusion, and ironing involve the transfer of large loads through a tooling/workpiece interface to plastically deform the workpiece to a desired shape. ...