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Master Alloy For Modification And Grain Refining Of Hypoeutectic Ai Si Based Foundry Alloys And Its Process For Manufacture
TITLE:MASTER ALLOY FOR MODIFICATION AND GRAIN REFINING OF HYPOEUTECTIC AI-SI BASED FOUNDRY ALLOYS AND ITS PROCESS FOR MANUFACTUREMaster alloys and in particular to master alloys for grain refinement and modification of hypo-eutectic Al-Si alloy. The master alloys is provided to selectively comprise Al-Ti-C-Sr wherein the content of Al is in the range of 80 to 92%, Ti is in the range of 4.8 to 5.2%, C is in the range of 1.1 to 2.2, Sr is in the range of 1.2 to13%. The master alloys (modifiner) can be advantageously added to carry out modification and grain refinement of hypoeutectic Al-Si based foundry alloys. Importantly, the master alloy favours grain refinement and modified castings in a single step. The master alloys is further directed to achieve simple and cost-effective both grain refinement and modification of hypoeutectic Al-si based foundry alloys. It is found to be highly compatible for the desired grain refinement and modification of Al-Si alloy and is added to the Al-Si alloys in liquid state. The master alloys are also advantageous in that it does not have any adverse effects on the desired modification. (FIG. - nil)
Notices, Deadlines & Correspondence
Patent Information
Applicants
INDIAN INSTITUTE OF TECHNOLOGY
Inventors
1. MADHUSUDAN CHAKRABORTY
2. AYYAGARI KAMESWARI PRASADA RAO
3. BUDARAJU SRINIVASA MURTY
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 656-kol-2004-granted-specification.pdf | 2011-10-07 |
| 2 | 656-kol-2004-granted-reply to examination report.pdf | 2011-10-07 |
| 3 | 656-kol-2004-granted-pa.pdf | 2011-10-07 |
| 4 | 656-kol-2004-granted-letter patent.pdf | 2011-10-07 |
| 5 | 656-kol-2004-granted-form 3.pdf | 2011-10-07 |
| 6 | 656-kol-2004-granted-form 2.pdf | 2011-10-07 |
| 7 | 656-kol-2004-granted-form 18.pdf | 2011-10-07 |
| 8 | 656-kol-2004-granted-form 1.pdf | 2011-10-07 |
| 9 | 656-kol-2004-granted-examination report.pdf | 2011-10-07 |
| 10 | 656-kol-2004-granted-drawings.pdf | 2011-10-07 |
| 11 | 656-kol-2004-granted-description (complete).pdf | 2011-10-07 |
| 12 | 656-kol-2004-granted-correspondence.pdf | 2011-10-07 |
| 13 | 656-kol-2004-granted-claims.pdf | 2011-10-07 |
| 14 | 656-kol-2004-granted-abstract.pdf | 2011-10-07 |
| 15 | 656-KOL-2004-FORM 27.pdf | 2011-10-07 |
| 16 | 656-KOL-2004-CORRESPONDENCE.pdf | 2011-10-07 |
| 17 | 656-KOL-2004-25-01-2023-LETTER OF PATENT.pdf | 2023-01-25 |
| 18 | 656-KOL-2004-10-02-2023-ALL DOCUMENTS.pdf | 2023-02-10 |