On the Stability of the Melt Jet Stream during Casting of Metallic Glass Wires
The factors that affect the stability of the melt stream during the casting of wire directly from the melt have been investigated. It is shown that the criticality of process parameters centres mostly on the forces imposed on the melt stream at confluence with the cooling water. The analysis of thes...
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| Format: | Article |
| Language: | English |
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MDPI AG
2015-06-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/5/2/1029 |
| _version_ | 1818676049220730880 |
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| author | Ayo Olofinjana Nyuk Yoong Voo |
| author_facet | Ayo Olofinjana Nyuk Yoong Voo |
| author_sort | Ayo Olofinjana |
| collection | DOAJ |
| description | The factors that affect the stability of the melt stream during the casting of wire directly from the melt have been investigated. It is shown that the criticality of process parameters centres mostly on the forces imposed on the melt stream at confluence with the cooling water. The analysis of these forces indicated that the shear component of the disturbance is dependent on the ratio of the velocity of the melt stream (vm) to that of the cooling water (vw) in accord with results obtained from previous experiments. The role of oxide-forming elements in widening the process parameters range is attributed to the increased stability of the melt stream due to the additional shear force resistance offered by the solid oxide layer. The roles of Cr and Si oxides in stabilising the melt stream are confirmed by X-ray photoelectron spectroscopy (XPS) of wire indicating the presence of these oxides on fresh as-cast wires. Melt superheat and nozzle clearance distance are not strictly stream stability factors, but rather their role in glass formation prescribes optimal limits for fully amorphous wire. |
| first_indexed | 2024-12-17T08:37:17Z |
| format | Article |
| id | doaj.art-fc0b5ed41b334f3491863cbbcea72ab4 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-17T08:37:17Z |
| publishDate | 2015-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-fc0b5ed41b334f3491863cbbcea72ab42022-12-21T21:56:27ZengMDPI AGMetals2075-47012015-06-01521029104410.3390/met5021029met5021029On the Stability of the Melt Jet Stream during Casting of Metallic Glass WiresAyo Olofinjana0Nyuk Yoong Voo1School of Science and Engineering, University of the Sunshine Coast, Maroochydore DC, QLD 4558, AustraliaFaculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, BE1410, Brunei DarussalamThe factors that affect the stability of the melt stream during the casting of wire directly from the melt have been investigated. It is shown that the criticality of process parameters centres mostly on the forces imposed on the melt stream at confluence with the cooling water. The analysis of these forces indicated that the shear component of the disturbance is dependent on the ratio of the velocity of the melt stream (vm) to that of the cooling water (vw) in accord with results obtained from previous experiments. The role of oxide-forming elements in widening the process parameters range is attributed to the increased stability of the melt stream due to the additional shear force resistance offered by the solid oxide layer. The roles of Cr and Si oxides in stabilising the melt stream are confirmed by X-ray photoelectron spectroscopy (XPS) of wire indicating the presence of these oxides on fresh as-cast wires. Melt superheat and nozzle clearance distance are not strictly stream stability factors, but rather their role in glass formation prescribes optimal limits for fully amorphous wire.http://www.mdpi.com/2075-4701/5/2/1029metallic glassamorphous alloywire castingmulti–strand castingjet stability |
| spellingShingle | Ayo Olofinjana Nyuk Yoong Voo On the Stability of the Melt Jet Stream during Casting of Metallic Glass Wires Metals metallic glass amorphous alloy wire casting multi–strand casting jet stability |
| title | On the Stability of the Melt Jet Stream during Casting of Metallic Glass Wires |
| title_full | On the Stability of the Melt Jet Stream during Casting of Metallic Glass Wires |
| title_fullStr | On the Stability of the Melt Jet Stream during Casting of Metallic Glass Wires |
| title_full_unstemmed | On the Stability of the Melt Jet Stream during Casting of Metallic Glass Wires |
| title_short | On the Stability of the Melt Jet Stream during Casting of Metallic Glass Wires |
| title_sort | on the stability of the melt jet stream during casting of metallic glass wires |
| topic | metallic glass amorphous alloy wire casting multi–strand casting jet stability |
| url | http://www.mdpi.com/2075-4701/5/2/1029 |
| work_keys_str_mv | AT ayoolofinjana onthestabilityofthemeltjetstreamduringcastingofmetallicglasswires AT nyukyoongvoo onthestabilityofthemeltjetstreamduringcastingofmetallicglasswires |