ISSN:
1573-4803
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Maschinenbau
Notizen:
Abstract Continuous amorphous wires with high strength and good ductility have been produced in the Fe-P-C alloy system by the in-rotating-water spinning technique; however, no amorphous wires are formed, using the same technique, in the Fe-P-B, Fe-P-Si and Fe-B-C systems. The Fe-P-C amorphous wires have a circular cross-section, smooth peripheral surface, and diameters in the range of about 80 to 230μm. Their tensile strength,σ f, and Vickers hardness,H v, increase with increasing phosphorus and/or carbon content and reach 3000 MPa and 895 DPN for Fe75P10C15. Fracture elongation,ε f, including elastic elongation is about 2.8%. Cold-drawing to an appropriate reduction in area causes an increase inσ f andε f of about 3.7 and 79%, respectively. This increase is interpreted to result from an interaction between crossing deformation bands introduced by cold-drawing and the increase in the uniformity of shape for the drawn wires. Further, the undrawn and drawn amorphous wires are so ductile that no cracks are observed even after a sharp bending test. Thus, the Fe-P-C amorphous wires are attractive for fine-gauge high-strength materials both because of the uniform shape of the wires and because of their superior mechanical qualities.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00591492
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