本文研究了合金元素、热加工和热处理工艺对一种Fe-Ni基高温合金中γ′-η相转变的影响,以及η相对机械性能和热加工性能的影响。试验结果表明,η相降低断裂强度和持久寿命,提高高温塑性和热加工性能.增加钛含量和热加工应变能促进η相形成,而添加Al,Mo和微量元素硼阻碍η相形成。
The γ'-η transformation and the formation of the η-phase itself on the me-chanical properties and hot-workability of an iron-nickel base superalloy (Fe-42Ni-13Cr-6Mo-2.8Ti-0.3Al) has been studied. The formation of η-phase was promotedby increment of titanium content as well as by hot-working energy, and was re-tarded by the addition of aluminium, molybdenum and minute boron. when suchan alloy did contain certain amount of η-phase, its rupture strength and/or stress-rup-ture life were reduced although its ductility and hot-workability were increased.
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