Striated Structure of Age-hardened Alloys

Optimization of Composition and Heat Treatment of Age-Hardened Pt-Al-Cr-Ni Alloys

GRATZEL and R. VÖLKL, Metall. Mater. Trans., 2005, 36A, 681–689 Pt-base alloys (1) with various contents of Al, Cr and Ni were arc melted. Solution heat treatments at 1450oC followed by water quenching gave single phase alloys. Ageing at 1000oC caused the precipitation of L12 ordered particles. (1), comprising (in at.%): 11 Al; 3 Cr; 6 Ni and balance Pt, had cuboidal precipitates with edge leng...

Mechanical Behavior of Precipitation Hardened Aluminum Alloys Welds

Structure of Limulus Striated Muscle

The musculature of the telson of Limulus polyphemus L. consists of three dorsal muscles: the medial and lateral telson levators and the telson abductor, and one large ventral muscle; the telson depressor, which has three major divisions: the dorsal, medioventral, and lateroventral heads. The telson muscles are composed of one type of striated muscle fiber, which has irregularly shaped myofibril...

Fine Structure of Striated Muscle

Much of the recent work on muscle fine structure has been discussed in a recent review by Bennett (1), who also covered the structure of various sarcoplasmic components and the sarcolemma. The present paper will be limited to myofibrillar fine structure. In the main, the current controversy in relation to muscle structure centers around two models, (a) what might be termed the "classical" model...

The Fine Structure of Striated Muscle

The available evidence from phase contrast, polarization optical, and electron microscopic studies on vertebrate skeletal muscle, insect skeletal muscle, and dipteran flight muscle is interpreted as favoring the following general structure of striated muscle. A continuous array of filaments (actin) runs through all bands of the sarcomere. These are linked by an axially periodic system of transv...