Grain boundary segregation of boron in INCONEL 718

被引：70

作者：

Chen, W

Chaturvedi, MC

Richards, NL

McMahon, G

机构：

[1] Univ Manitoba, Dept Mech & Ind Engn, Winnipeg, MB R3T 5V6, Canada

[2] Bristol Aerosp Ltd, Mat & Proc Facil, Winnipeg, MB R3C 2S4, Canada

[3] Canada Ctr Mineral & Energy Technol, Met & Mat Technol Labs, Ottawa, ON K1A 0G1, Canada

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1998年 / 29卷 / 07期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1007/s11661-998-0020-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The segregation behavior of boron at grain boundaries in two INCONEL 718(+) based alloys with different B concentrations was studied. The alloys, one containing 11 ppm of B and the other 43 ppm, were homogenized at 1200 degrees C for 2 hours followed by water quenching and air cooling. A strong segregation of boron at grain boundaries was observed using secondary ion mass spectrometry after the heat treatment in both the alloys. The segregation was found mainly to be of nonequilibrium type. The homogenized samples were also annealed at 1050 degrees C for various lengths of time. During annealing, boride particles were observed to first form at grain boundaries and then to dissolve on continued annealing at 1050 degrees C, The mechanisms of segregation and desegregation of B are discussed.

引用

页码：1947 / 1954

页数：8

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