鐵-アルミニウム-珪素系平衡状態圖

概要

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By means of microscopic observation as well as thermal, X-ray, magnetic and dilatometric analyses, the constitution of thernary alloys of Fe-Al-Si system was thoroughly investigated, and the equilibrium diagram of the whole system was determined. In this system, there exist six phases of ternary compound, corresponding approximately to the chemical formula, Fe_3Al_3Si_2, Fe_6Al_12Si_5, Fe_5Al_9Si_5, FeAl_3Si_2, Fe_6Al_15Si_5 and FeAl_4Si, respectively, all being formed by a ternary peritectic reaction. There occur the following ninteen nonvariant reactions : - M+ε(FeAl)<1, 120°>___⇌α(Fe)+θ(FeAl_2) ; M+θ<1, 115°>___⇌α+η(Fe_2Al_5) ; M+α+ρ(FeSi)<1, 050°>___⇌K_1(Fe_3Al_3Si_2) ; M+α<1, 030°>___⇌η+K_1 ; M+η<1, 020°>___⇌ζ(FeAl_2)+K_1 ; M+ρ<1, 000°>___⇌K_1+α(Fe_2Si_5) ; M+ζ+K_1<940°>___⇌K_2(Fe_6Al_12Si_5) ; M+K_1+K_2<935°>___⇌K_3(Fe_5Al_9Si_5) ; M+K_1<885°>___⇌K_3+ω ; M+ω<880°>___⇌K_3+δ(Si) ; M+K_3+δ<865°>___⇌K_4(FeAl_3Si_2) ; M+ζ+K_2<855°>___⇌K_5(Fe_6Al_15Si_5) ; M+K_3<835°>___⇌K_2+K_4 ; M+K_2<790°>___⇌K_4+K_5 M+K_4+K_5<700°>___⇌K_6(FeAl_4Si) ; M+ζ<620°>___⇌K_5+β(Al) ; M+K_5<615°>___⇌K_6+β ; M+K_4<600°>___⇌K_6+δ ; M<577°>___⇌K_6+β+δ. The changes of A_2 points in α-phase and the binary peritectoid reaction, α+ρ(FeSi)⇌σ(Fe_3Si_2), were also studied.
社団法人日本鉄鋼協会の論文
1940-05-25