Effect of heat treatments on Inconel 625 fabricated by wire and arc additive manufacturing: an in situ synchrotron X-ray diffraction analysis

被引：32

作者：

Rodrigues, Tiago A. ^{[1
]}

Farias, Francisco Werley Cipriano ^{[1
]}

Avila, Julian A. ^{[2
]}

Maawad, Emad ^{[3
]}

Schell, Norbert ^{[3
]}

Santos, Telmo G. ^{[1
]}

Oliveira, J. P. ^{[1
,4
,5
,6
]}

机构：

[1] Univ NOVA Lisboa Caparica, NOVA Sch Sci & Technol, Dept Mech & Ind Engn, UNIDEMI, Caparica, Portugal

[2] Univ Politecn Cataluna, Barcelona Sch Engn ETSEIB, Dept Strength Mat & Struct Engn, Barcelona, Spain

[3] Inst Mat Phys, Helmholtz Zentrum Hereon, Geesthacht, Germany

[4] Univ NOVA Lisboa, Dept Mat Sci, NOVA Sch Sci & Technol, CENIMAT-I3N, Caparica, Portugal

[5] Univ NOVA Lisboa, NOVA Sch Sci & Technol, Dept Mech & Ind Engn, UNIDEMI, P-2829516 Caparica, Portugal

[6] Univ NOVA Lisboa, NOVA Sch Sci & Technol, Dept Mat Sci, CENIMAT-I3N, P-2829516 Caparica, Portugal

来源：

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2023年 / 28卷 / 07期

关键词：

Synchrotron radiation; nickel alloys; hardness test; isothermal heat treatments; wire and arc additive manufacturing; MECHANICAL-PROPERTIES; DELTA-PHASE; MICROSTRUCTURE; TEMPERATURE;

D O I：

10.1080/13621718.2023.2187927

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of heat treatments on wire and arc additively manufactured Inconel 625 parts was investigated using in situ synchrotron X-ray diffraction and hardness testing. As-built samples revealed the presence of a gamma-matrix with precipitation of gamma ', gamma '' and MC carbides. When heat treated at 750 degrees C for 4 h, gamma '' phase precipitated increasing the hardness by 5%. In situ X-ray observations revealed that heat treating at 870 degrees C for 1 h resulted in delta-phase precipitation. Two different second-stage temperatures were tested (1050 degrees C and 1150 degrees C), which dissolved the delta-phase while MC carbides formed upon cooling. The second stage at 1150 degrees C had a higher deleterious effect than the one performed at 1050 degrees C due to extensive grain growth.

引用

页码：534 / 539

页数：6

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