Aluminum-silicon Casting Alloys: An Atlas of Microfractographs
ASM International, Jan 1, 2004 - Technology & Engineering - 124 pages
This atlas provides an in-depth understanding of the metallurgy and fracture behavior of aluminum-silicon casting alloys, which are used in a wide variety of automotive, aerospace, and consumer product applications. The atlas includes over 300 high-definition microfractographs of fracture profiles and fracture surfaces, accompanied with detailed descriptions and analysis of the fracture features and their significance in the selection, processing, properties, and performance of the alloy. The microfractographs are described and classified according to criteria described in detail in the introductory chapters in the book. The factors determining the fracture mechanism in these alloys, on the basis of their physical and mechanical properties and fracture mechanics, are described and analyzed. The set of micrographs in this atlas include several unique features: classification according to the alloy and its processing history, detailed analysis of selected microregions of the fracture surface, reference of the fracture features to the phase constituents of the alloy, and high resolution and high microscopic magnification of the SEM images. This book will be of great value to anyone involved in the selection, processing, application, testing, or evaluation of aluminum-silicon castings. The target audience includes metallurgists, foundry personnel, failure analysts, purchasers of castings, researchers in physical and mechanical metallurgy, students, and educators.
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AlSi7Mg aluminum and silicon Aluminum Association aluminum solid solution aluminum-silicon alloy Aluminum-Silicon Casting Alloys ASM International Atlas of Microfractographs atoms brittle eutectic phases brittle phase cellular fracture cellular morphology classiﬁcation cleavage cracks cleavage facets cleavage steps crack front crossed cracked silicon cracks are visible crossed the cleavage decohesion deformed aluminum solid dendrite Detail developed surface ductile fracture Fatigue fracture formed fracture mechanism fracture morphology Fracture proﬁle fracture surface hypereutectic intercrystalline fracture interdendritic eutectic interface between aluminum interface cohesion intermetallic intermetallic phase main crack crossed material matrix microdeformation micrograph micronecks microregions microscope microstructure observed parallel cleavage planes permanent mold casting plastic deformation polyphase region primary silicon crystal proﬁle line proﬁle of specimen Reﬁned reﬂects secondary cracks shear dimples shear edge silicon particles silicon precipitates specimen after static static tensile test step bands stress surface after static Surfaces of Alloy tear ridge Transcrystalline fracture two-phase region V-notch impact test Warmuzek
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