The effect of the MCrAlY composition and aluminizing cycle upon the microstructure and hot corrosion resistance of the over-aluminized MCrAlY coating on IN738LC alloy substrate

被引：7

作者：

Ajdari, Saeed ^{[1
]}

Nogorani, Farhad Shahriari ^{[1
,3
]}

Moghadam, Pejman Zamani ^{[2
]}

机构：

[1] Shiraz Univ Technol, Dept Mat Sci & Engn, Shiraz, Iran

[2] Malek Ashtar Univ Technol, Fac Mat & Mfg Technol, Tehran, Iran

[3] Shiraz Univ Technol, Dept Mat Sci & Engn, Shiraz 7155713876, Iran

来源：

MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2023年 / 74卷 / 06期

关键词：

CoNiCrAlY; HVOF; microstructure; NiCoCrAlY; over-aluminizing; MECHANICAL-PROPERTIES; NICKEL; DIFFUSION;

D O I：

10.1002/maco.202213496

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The aluminizing behavior of high-velocity oxy-fuel sprayed CoNiCrAlY, or NiCoCrAlY-coated IN738LC alloy has been investigated via asingle or two-step pack cementation aluminizing processes. The microstructural study showed that a more desirable low aluminum-containing MCrAlY coating is obtained through single-step aluminizing. The resultant over-aluminized coating microstructure consisted of the Co-containing beta-NiAl in the aluminide top layer and the Ni-Co-Cr-based austenitic gamma solid solution matrix decorated with the Co-containing beta-NiAl islands in the MCrAlY zone.

引用

页码：846 / 858

页数：13