| Related citation: | Sheng Lei,Jun Sun,Yinfeng Zhu,Huaqi Liang,Yansheng Yao,Rong Hu.Investigation on the Tensile Properties and Fracture Characteristics of Amorphous Ribbons Fe81.50B1.40Si7.95Nb7.37Cu1.73P0.05[J].Journal of Harbin Institute Of Technology(New Series),2019,26(6):80-85.DOI:10.11916/j.issn.1005-9113.18045. |
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| Author Name | Affiliation | | Sheng Lei | School of Mechanical and Electrical Engineering, Anhui Jianzhu University, Hefei 230061, China | | Jun Sun | School of Mechanical and Electrical Engineering, Anhui Jianzhu University, Hefei 230061, China | | Yinfeng Zhu | School of Mechanical and Electrical Engineering, Anhui Jianzhu University, Hefei 230061, China | | Huaqi Liang | School of Mechanical and Electrical Engineering, Anhui Jianzhu University, Hefei 230061, China | | Yansheng Yao | School of Mechanical and Electrical Engineering, Anhui Jianzhu University, Hefei 230061, China | | Rong Hu | School of Mechanical and Electrical Engineering, Anhui Jianzhu University, Hefei 230061, China |
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| Abstract: |
| A number of Fe-Si-B amorphous ribbons are made by using melt spinning method. The microstructure, mechanical and other relevant properties of thin amorphous ribbons of Fe81.50B1.40Si7.95Nb7.37Cu1.73P0.05 alloy at room temperature were studied with several equipment including Differential scanning calorimetry (DSC), X-ray diffraction (XRD)，Scanning electron microscope (SEM), and tensile machine. Significantly different microstructures exist between the free and wheel face of the thin amorphous ribbons. The free face is smooth while the wheel face is coarse with a great number of micro voids on the surface. Experimental results show that the tensile strength and elastic modulus of the thin amorphous ribbons at room temperature are 1951 MPa and 70 GPa. In addition, the amorphous ribbons possess reasonable tensile elongation (2.46%). The fracture appearance of amorphous ribbons of Fe81.50B1.40Si7.95Nb7.37Cu1.73P0.05 alloy is a mixed mode of ductile and brittle fracture which includes dimples and partial cleavage fracture similar to the crystalline materials. The dimple feature proves that it still has plastic characteristics on the micro scale. |
| Key words: Fe81.50B1.40Si7.95Nb7.37Cu1.73P0.05 alloy tensile strength ductile brittle fracture melt spinning method dimples |
| DOI：10.11916/j.issn.1005-9113.18045 |
| Clc Number:TG14 |
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| Descriptions in Chinese: |
| Fe81.50B1.40Si7.95Nb7.37Cu1.73P0.05非晶带材的拉伸性能和断裂特征研究 创新点说明：本文采用单辊甩带法制备出的 Fe81.50B1.40Si7.95Nb7.37Cu1.73P0.05非晶合金带材，采用差热分析法（DSC）、X射线荧光光谱法(XRF)研究了 Fe81.50B1.40Si7.95Nb7.37Cu1.73P0.05非晶带材的微观组织及晶化过程，并使用INSTRON E3000电子万能材料试验机研究了非晶带材的力学性能。 1）Fe81.50B1.40Si7.95Nb7.37Cu1.73P0.05非晶薄带自由面与贴辊面的微观结构差异较大，自由面光洁平整，而贴辊面粗糙不平且有孔洞等缺陷。 2）对Fe81.50B1.40Si7.95Nb7.37Cu1.73P0.05非晶带材的力学性能研究表明，非晶带材内部应力分布严重不均匀，在拉伸过程中始终处于弹性变形阶段，Fe81.50B1.40Si7.95Nb7.37Cu1.73P0.05非晶带材的常温抗拉强度可达2000 MPa，弹性模量低于铁基合金材料。 3）对非晶薄带试样断口进行分析，非晶薄带试样断裂后断裂表面具有韧性断裂的韧窝特征。一般Fe-B-Si非晶带材脆性大，而Fe81.50B1.40Si7.95Nb7.37Cu1.73P0.05非晶带材具有一定的塑性。 关键词：Fe81.50B1.40Si7.95Nb7.37Cu1.73P0.05合金，拉伸强度，韧性，脆断，熔体旋淬法，韧窝 |
