Wang Jianqiao,He Qinsheng,Li Fang,et al.Effects of Annealing Process on the Microstructure and Properties of Haynes 282 Alloy Wire[J].Special Steel,2026,47(04):87-95.
Wang Jianqiao,He Qinsheng,Li Fang,et al.Effects of Annealing Process on the Microstructure and Properties of Haynes 282 Alloy Wire[J].Special Steel,2026,47(04):87-95.DOI: 10.20057/j.1003-8620.N250587.
Effects of Annealing Process on the Microstructure and Properties of Haynes 282 Alloy Wire
The annealing process for wires used in high-temperature seals is a critical parameter in product design. This study investigated the effects of cold drawing reduction in area and annealing parameters on the strength, ductility, and microstructure of Haynes 282 alloy wire feedstock (0.9 mm diameter baseline seal wire) using optical microscopy, scanning electron microscopy, room-temperature tensile testing, and hardness measurements. A fitting analysis was conducted on the average grain size after annealing for different cold drawing reduction rates. The results indicate an inverse relationship between grain size and hardness after annealing under different parameters: as the annealing temperature increased or holding time extended, the grain size increased while hardness decreased. An increase in the reduction in area led to work hardening, demonstrating a linear relationship between the cold drawing reduction in area and tensile strength. When a fully fibrous microstructure form (at 69.14% reduction), the tensile strength reach 1 805 MPa. The Haynes 282 alloy wire exhibits abnormal grain growth and a decline in properties after annealing within low area reduction ranges (10.80%-39.51%) and at an area reduction of 62.65%, due to non-uniform deformation. Based on comprehensive experimental results and fitting analysis, the optimal annealing parameters were determined to be 1 140 ℃ for 45 minutes. A cold drawing reduction in area between 45.60% and 55.56% prior to this annealing treatment was found to produce the final wire product with a stable microstructure and an optimal strength-ductility balance.
Damodhar Naidu G , Nageswara Rao G V S , Chaube R K . Effect of long-term exposure on microstructure and hardness of aged Haynes 282 alloy [J]. Metallography, Microstructure, and Analysis , 2023 , 12 ( 6 ): 965 - 985 .
Joseph C , Persson C , Hörnqvist Colliander M . Influence of heat treatment on the microstructure and tensile properties of Ni-base superalloy Haynes 282 [J]. Materials Science and Engineering: A , 2017 , 679 : 520 - 530 .
Tian Y Z , Li L L , Li J J , et al . Correlating strength and hardness of high-entropy alloys [J]. Advanced Engineering Materials , 2021 , 23 ( 8 ): 2001514 .
Pizano L F L , Sridar S , De Vecchis R R , et al . Recrystallization behavior and mechanical properties of Haynes 282 fabricated by wire-arc additive manufacturing with post-heat treatment [J]. Journal of Manufacturing Processes , 2024 , 119 : 781 - 789 .
Li S Q , Zhang Z , Liu R , et al . Microstructure-based computational fatigue life prediction of Haynes 282 alloy [J]. Journal of Materials Engineering and Performance , 2023 , 32 ( 11 ): 5150 - 5166 .
Xia L , Su H J , Hu Q D , et al . Effects of post-heat treatment and carbide precipitates on strength-ductility balance of GH3536 superalloy prepared by selective laser melting [J]. Acta Metallurgica Sinica (English Letters) , 2024 , 37 ( 10 ): 1667 - 1679 .