发明名称 |
Ni-Cr ALLOY MATERIAL AND SEAMLESS OIL COUNTRY TUBULAR GOODS USING THE SAME |
摘要 |
A Ni—Cr alloy material has a chemical composition that consists of; Si: 0.01 to 0.5%, Mn: 0.01 to less than 1.0%, Cu: 0.01 to less than 1.0%, Ni: 48 to less than 55%, Cr: 22 to 28%, Mo: 5.6 to less than 7.0%, N: 0.04 to 0.16%, sol.Al: 0.03 to 0.20%, REM: 0.01 to 0.074%, W: 0% or more and less than 8.0%, Co: 0 to 2.0%; one or more of Ca and Mg: 0.0003 to 0.01% in total, and one or more of Ti, Nb, Zr, and V: 0 to 0.5% in total, the balance thereof being Fe and impurities. The impurities include C £ 0.03%, P £ 0.03%, S £ 0.001%, and O £ 0.01%. The dislocation density r of the Ni—Cr alloy material expressed in m−2 satisfies a formula [7.0′1015£r£2.7′1016−2.67′1017′REM]. |
申请公布号 |
US2016265694(A1) |
申请公布日期 |
2016.09.15 |
申请号 |
US201415033930 |
申请日期 |
2014.11.11 |
申请人 |
NIPPON STEEL & SUMITOMO METAL CORPORTION |
发明人 |
TOMIO Yusaku;SAGARA Masayuki |
分类号 |
F16L9/02;C22C19/05 |
主分类号 |
F16L9/02 |
代理机构 |
|
代理人 |
|
主权项 |
1. A Ni—Cr alloy material having a chemical composition that consists of, by mass %:
Si: 0.01 to 0.5%, Mn: 0.01% or more and less than 1.0%, Cu: 0.01% or more and less than 1.0%, Ni: 48% or more and less than 55%, Cr: 22 to 28%, Mo: 5.6% or more and less than 7.0%, N: 0.04 to 0.16%, sol.Al: 0.03 to 0.20%, REM: 0.01 to 0.074%, W: 0% or more and less than 8.0%, Co: 0 to 2.0%, one or more of Ca and Mg: 0.0003 to 0.01% in total, and one or more of Ti, Nb, Zr, and V: 0 to 0.5% in total; and the balance being Fe and impurities, wherein C, P, S, and O in the impurities are C: 0.03% or less, P: 0.03% or less, S: 0.001% or less, and O: 0.01% or less, and furthermore the dislocation density satisfies a following formula:
7.0×1015≦ρ≦2.7×1016−2.67×1017×[REM (%)] where ρ denotes dislocation density expressed in m−2, and [REM (%)] denotes REM content expressed by mass %. |
地址 |
Tokyo JP |