Manufacture of highly corrosion resistant ni base alloy
专利汇可以提供Manufacture of highly corrosion resistant ni base alloy专利检索，专利查询，专利分析的服务。并且PURPOSE: To obtain an Ni base alloy superior in stress corrosion cracking resistance in high temp., high pressure water circumstance by annealing said alloy having a specified compsn., then cold working, next heat treating under a specified condition, further heat treating at just under and above the recrystallization temp.
CONSTITUTION: The Ni base alloy consisting of, by weight, ≤0.07% C, ≤1.0% Si, ≤1.0% Mn, 14W35% Cr, 50W80% Ni, 0.05W1.0% Ti, 0.1W1.0% Al, ≤0.15% N and substantially the balance Fe with inevitable impurities is melted and manufactured. Said material is cold worked by ≥30% reduction after the annealing, then heat treated at 675W725°C for 3W7hr, to aim the precipitation of Cr carbides and the recovery of Cr lack layer. Next, heated at 770W790°C just under the recrystallization temp. for ≥1hr, if necessary, cold worked by ≥30% reduction, then heat treated by one time or more at 805W830°C just above said temp. for ≥0.1hr. In this way, the extremely refining of crystal grains is aimed. The Ni base alloy can be used to steam generator heat transfer tube, etc., in pressurized water reactor.
COPYRIGHT: (C)1985,JPO&Japio，下面是Manufacture of highly corrosion resistant ni base alloy专利的具体信息内容。
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