Effect of heating mode and sintering temperature on the consolidation of 90W-7Ni-3Fe alloys

Avijit Mondal; Anish Upadhyaya; Dinesh Agrawal

doi:10.1016/j.jallcom.2010.09.008

Effect of heating mode and sintering temperature on the consolidation of 90W-7Ni-3Fe alloys

Avijit Mondal, Anish Upadhyaya, Dinesh Agrawal

Materials Research Institute (MRI)

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

The present study compares the sintering response of 90W-7Ni-3Fe alloys consolidated in a 2.45 GHz microwave furnace and a conventional furnace. The W-Ni-Fe compacts were sintered in a temperature range of 1200-1500 °C corresponding to solid-state as well as liquid phase sintering. The compacts were successfully sintered in a microwave furnace with about 80% reduction in the overall processing time. For both the heating modes, the W-Ni-Fe alloys exhibited significant densification prior to melt formation through solid-state sintering. The in situ dilatometric studies revealed that the contribution to densification from solid-state sintering is higher at lower heating rates. In comparison to conventional sintering, microwave sintered compacts showed relatively refined microstructure and higher hardness and flexural strength.

Original language	English (US)
Pages (from-to)	301-310
Number of pages	10
Journal	Journal of Alloys and Compounds
Volume	509
Issue number	2
DOIs	https://doi.org/10.1016/j.jallcom.2010.09.008
State	Published - Jan 12 2011

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2010.09.008

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title = "Effect of heating mode and sintering temperature on the consolidation of 90W-7Ni-3Fe alloys",

abstract = "The present study compares the sintering response of 90W-7Ni-3Fe alloys consolidated in a 2.45 GHz microwave furnace and a conventional furnace. The W-Ni-Fe compacts were sintered in a temperature range of 1200-1500 °C corresponding to solid-state as well as liquid phase sintering. The compacts were successfully sintered in a microwave furnace with about 80% reduction in the overall processing time. For both the heating modes, the W-Ni-Fe alloys exhibited significant densification prior to melt formation through solid-state sintering. The in situ dilatometric studies revealed that the contribution to densification from solid-state sintering is higher at lower heating rates. In comparison to conventional sintering, microwave sintered compacts showed relatively refined microstructure and higher hardness and flexural strength.",

author = "Avijit Mondal and Anish Upadhyaya and Dinesh Agrawal",

note = "Funding Information: This collaborative research was done as a part of the Center for Development of Metal-Ceramic Composites through Microwave Processing which was funded by the Indo-US Science and Technology Forum (IUSSTF), New Delhi. ",

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doi = "10.1016/j.jallcom.2010.09.008",

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AU - Mondal, Avijit

AU - Upadhyaya, Anish

AU - Agrawal, Dinesh

N1 - Funding Information: This collaborative research was done as a part of the Center for Development of Metal-Ceramic Composites through Microwave Processing which was funded by the Indo-US Science and Technology Forum (IUSSTF), New Delhi.

PY - 2011/1/12

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N2 - The present study compares the sintering response of 90W-7Ni-3Fe alloys consolidated in a 2.45 GHz microwave furnace and a conventional furnace. The W-Ni-Fe compacts were sintered in a temperature range of 1200-1500 °C corresponding to solid-state as well as liquid phase sintering. The compacts were successfully sintered in a microwave furnace with about 80% reduction in the overall processing time. For both the heating modes, the W-Ni-Fe alloys exhibited significant densification prior to melt formation through solid-state sintering. The in situ dilatometric studies revealed that the contribution to densification from solid-state sintering is higher at lower heating rates. In comparison to conventional sintering, microwave sintered compacts showed relatively refined microstructure and higher hardness and flexural strength.

AB - The present study compares the sintering response of 90W-7Ni-3Fe alloys consolidated in a 2.45 GHz microwave furnace and a conventional furnace. The W-Ni-Fe compacts were sintered in a temperature range of 1200-1500 °C corresponding to solid-state as well as liquid phase sintering. The compacts were successfully sintered in a microwave furnace with about 80% reduction in the overall processing time. For both the heating modes, the W-Ni-Fe alloys exhibited significant densification prior to melt formation through solid-state sintering. The in situ dilatometric studies revealed that the contribution to densification from solid-state sintering is higher at lower heating rates. In comparison to conventional sintering, microwave sintered compacts showed relatively refined microstructure and higher hardness and flexural strength.

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Effect of heating mode and sintering temperature on the consolidation of 90W-7Ni-3Fe alloys

Abstract

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