紧急!!!!沉淀硬化17 04PH, 有没有人在固溶之前做过均质化??

lydhxjt

有没有人在固溶之前做过均质化@1150度。
保持多长时间?
与固溶之间如何连接的? (炉内冷却，水冷)

谢谢

好学青年

先说说为什么要作均匀化呀

lydhxjt

2# 好学青年 谢谢好学青年，我这里处理的是精铸零件，热处理的顺序是均质化，固溶，沉淀硬化。在沉淀硬化前有一道加工。为了保证加工的顺利进行，客户要求先做一个均质化。

lydhxjt

还想求一个17-4PH
连续钢连续冷却转变(Continuous Cooling Transformation)曲线图

jj224361

AMS 5643Q 摘录：
Steel, Corrosion-Resistant, Bars, Wire, Forgings, Tubing, and Rings
16Cr - 4.0Ni - 0.30Cb - 4.0Cu
Solution Heat Treated, Precipitation Hardenable
(Composition similar to UNS S17400)
Heat Treatment:
Bars, wire, forgings, mechanical tubing, and flash welded rings shall be solution heat treated to
1900 °F ± 25 (1038 °C ± 14), holding at heat for a time commensurate with section thickness,
heating equipment, and procedure used, and cooling as required to below 90 °F (32 °C）
Flash welded rings may be given a homogenization heat treatment prior to solution heat treatment
when permitted by purchaser. When such treatment is permitted, rings shall be heated to
2100 °F ± 25 (1149 °C ± 14), held at heat for not less than 90 minutes, and cooled at a rate
equivalent to, or faster than, an air cool.