Fatigue behavior of an Fe48Cr15Mo14Er2C15B6 amorphous steel
- 1 September 2006
- journal article
- Published by Springer Science and Business Media LLC in Journal of Materials Research
- Vol. 22 (2), 544-550
- https://doi.org/10.1557/jmr.2007.0047
Abstract
Four-point-bend fatigue experiments were conducted on the Fe48Cr15Mo14Er2C15B6 bulk metallic glass (BMG), amorphous steel, under load control, employing an electrohydraulic machine, at a frequency of 10 Hz (using a sinusoidal waveform) with an R ratio of 0.1, where R = σmin./σmax. (σmin. and σmax. are the applied minimum and maximum stresses, respectively). The test environment was laboratory air. Fe48Cr15Mo14Er2C15B6 exhibited a high fatigue-endurance limit (682 MPa), which is found to be greater than those of the Zr-based BMG, Al-alloy, and high-nitrogen steel. However, the stress versus number of fatigue cycles curve of Fe48Cr15Mo14Er2C15B6 has a significantly brittle fracture mode. Some fatigue cracks initiated from the inclusions or porosities, and the fatigue-crack propagation region was large. However, other cracks initiated from the outer tensile surface of the specimen, and the fatigue-crack propagation region was very small. The mechanisms of fatigue-crack initiation are suggested.Keywords
This publication has 26 references indexed in Scilit:
- Comparison of fatigue behavior of a bulk metallic glass and its compositeIntermetallics, 2006
- Fatigue behavior of Zr–Ti–Ni–Cu–Be bulk-metallic glassesIntermetallics, 2005
- Fe–Mn–Cr–Mo–(Y,Ln)–C–B (Ln = Lanthanides) bulk metallic glasses as formable amorphous steel alloysJournal of Materials Research, 2004
- Fracture and deformation of bulk metallic glasses and their compositesIntermetallics, 2004
- Fatigue behavior of bulk-metallic glassesIntermetallics, 2004
- Structural Amorphous SteelsPhysical Review Letters, 2004
- Fe-based bulk metallic glasses with diameter thickness larger than one centimeterJournal of Materials Research, 2004
- Synthesis of iron-based bulk metallic glasses as nonferromagnetic amorphous steel alloysApplied Physics Letters, 2003
- Mechanical properties of Fe-based bulk glassy alloys in Fe–B–Si–Nb and Fe–Ga–P–C–B–Si systemsJournal of Materials Research, 2003
- Bulk amorphous alloys with high mechanical strength and good soft magnetic properties in Fe–TM–B (TM=IV–VIII group transition metal) systemApplied Physics Letters, 1997