Abstract
The following conclusions can be made from the second year research: 1. Easy control for alloying elements can be made for the following adding metals like Nb, V, Sn, Mo, Fe due to low vapor pressure. In case of Cr and Te= known to have high vapor pressure, they are controlled by adding master alloy(Zr-Cr) or quite excess of aimed composition. However, Bi was found to be very difficult to charging the certain amount into the melt. 2. Oxygen content can be adjusted by adding the Zr-10%O master alloy considering the inherent amount of oxygen in sponge zirconium. 3. The charging rod of 38 mm in diameter, 96 mm in length was made by a series of button melting, casting and vacuum welding, from this, Zr-2.5Nb ingot of 50 mm in diameter and 550 mm in length was fabricated by EB drip melting process. 4. The amount of Nb can be successfully adjusted at 2.8% with charging 15% excess. Nb as adding element is easily controlled due to high-melting -point metal and its low vapor pressure. 5. Oxygen content is not varied during remelting, casting, and drip melting, only slight change was observed in button melting stage due to uptake
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Lee, Kang In;
Kim, Won Baek;
Lee, Chul Kyung;
Choi, Kuk Sun;
Kang, Dae Kyu;
Seo, Chang Ryul
[1]
- Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)
Citation Formats
Lee, Kang In, Kim, Won Baek, Lee, Chul Kyung, Choi, Kuk Sun, Kang, Dae Kyu, and Seo, Chang Ryul.
Development of advanced nuclear materials - Fabrication of Zr-Nb alloy used in PHWRs.
Korea, Republic of: N. p.,
1995.
Web.
Lee, Kang In, Kim, Won Baek, Lee, Chul Kyung, Choi, Kuk Sun, Kang, Dae Kyu, & Seo, Chang Ryul.
Development of advanced nuclear materials - Fabrication of Zr-Nb alloy used in PHWRs.
Korea, Republic of.
Lee, Kang In, Kim, Won Baek, Lee, Chul Kyung, Choi, Kuk Sun, Kang, Dae Kyu, and Seo, Chang Ryul.
1995.
"Development of advanced nuclear materials - Fabrication of Zr-Nb alloy used in PHWRs."
Korea, Republic of.
@misc{etde_575441,
title = {Development of advanced nuclear materials - Fabrication of Zr-Nb alloy used in PHWRs}
author = {Lee, Kang In, Kim, Won Baek, Lee, Chul Kyung, Choi, Kuk Sun, Kang, Dae Kyu, and Seo, Chang Ryul}
abstractNote = {The following conclusions can be made from the second year research: 1. Easy control for alloying elements can be made for the following adding metals like Nb, V, Sn, Mo, Fe due to low vapor pressure. In case of Cr and Te= known to have high vapor pressure, they are controlled by adding master alloy(Zr-Cr) or quite excess of aimed composition. However, Bi was found to be very difficult to charging the certain amount into the melt. 2. Oxygen content can be adjusted by adding the Zr-10%O master alloy considering the inherent amount of oxygen in sponge zirconium. 3. The charging rod of 38 mm in diameter, 96 mm in length was made by a series of button melting, casting and vacuum welding, from this, Zr-2.5Nb ingot of 50 mm in diameter and 550 mm in length was fabricated by EB drip melting process. 4. The amount of Nb can be successfully adjusted at 2.8% with charging 15% excess. Nb as adding element is easily controlled due to high-melting -point metal and its low vapor pressure. 5. Oxygen content is not varied during remelting, casting, and drip melting, only slight change was observed in button melting stage due to uptake the desorbed gases during the melting operation. Nuclear materials in domestic nuclear power plants depend on import and this amount reaches 100 million dollars per year. The increase in demand for the development of new zirconium based alloys are expecting. All the results involving this research can be applied for the melting of reactive metals, vacuum refining and alloy design. 13 refs., 6 tabs., 10 figs., 10 ills. (author)}
place = {Korea, Republic of}
year = {1995}
month = {Jul}
}
title = {Development of advanced nuclear materials - Fabrication of Zr-Nb alloy used in PHWRs}
author = {Lee, Kang In, Kim, Won Baek, Lee, Chul Kyung, Choi, Kuk Sun, Kang, Dae Kyu, and Seo, Chang Ryul}
abstractNote = {The following conclusions can be made from the second year research: 1. Easy control for alloying elements can be made for the following adding metals like Nb, V, Sn, Mo, Fe due to low vapor pressure. In case of Cr and Te= known to have high vapor pressure, they are controlled by adding master alloy(Zr-Cr) or quite excess of aimed composition. However, Bi was found to be very difficult to charging the certain amount into the melt. 2. Oxygen content can be adjusted by adding the Zr-10%O master alloy considering the inherent amount of oxygen in sponge zirconium. 3. The charging rod of 38 mm in diameter, 96 mm in length was made by a series of button melting, casting and vacuum welding, from this, Zr-2.5Nb ingot of 50 mm in diameter and 550 mm in length was fabricated by EB drip melting process. 4. The amount of Nb can be successfully adjusted at 2.8% with charging 15% excess. Nb as adding element is easily controlled due to high-melting -point metal and its low vapor pressure. 5. Oxygen content is not varied during remelting, casting, and drip melting, only slight change was observed in button melting stage due to uptake the desorbed gases during the melting operation. Nuclear materials in domestic nuclear power plants depend on import and this amount reaches 100 million dollars per year. The increase in demand for the development of new zirconium based alloys are expecting. All the results involving this research can be applied for the melting of reactive metals, vacuum refining and alloy design. 13 refs., 6 tabs., 10 figs., 10 ills. (author)}
place = {Korea, Republic of}
year = {1995}
month = {Jul}
}