Effects of microstructure and γ′ distribution on the hot deformation behavior for a powder metallurgy superalloy FGH96
Source abstract
Abstract
Aiming to clarify the effects of initial states on hot deformation behavior of a powder metallurgy nickel-based superalloy FGH96, specimens in hot isostatic pressed (HIPed) and solution states were isothermally compressed in the temperature range of 1000–1150 °C and the strain rate range of 0.001–1.0 s−1. It revealed that the flow behavior of FGH96 was dependent on the initial states, in which the deformation resistance was higher in the solution state than that in the HIPed state at evaluated temperatures, and the differences became less when the temperature was higher than the γ′ dissolution temperature. The calculated hot activation energy using peak stresses are 590 and 1285 kJ mol−1for HIPed and solution specimens. Comparison with HIPed specimen, the efficiency of power dissipation (η) in solution specimen is less, and the optimum workability regime moves to higher temperatures. Cracking and in-grain shear bands were observed in the specimens when compressed in flow instability areas.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Metallurgy and Material Forming · Powder Metallurgy Techniques and Materials · Metal Alloys Wear and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. 10.1016/j.msea.2012.11.08410.1016/j.msea.2012.11.084 ↗
2. 10.1016/j.msea.2011.01.01310.1016/j.msea.2011.01.013 ↗
3. 10.1016/j.msea.2005.11.03110.1016/j.msea.2005.11.031 ↗
4. 10.1016/j.matdes.2013.03.08110.1016/j.matdes.2013.03.081 ↗
5. 10.1016/j.ultramic.2014.04.00110.1016/j.ultramic.2014.04.001 ↗
6. Characterization of hot deformation behavior of a P/M nickel-base superalloy using processing map and activation energy10.1016/j.msea.2010.07.039 ↗
7. Static recrystallization mechanism of FGH95 superalloy
8. 10.1080/0141861800823932810.1080/01418618008239328 ↗
9. 10.1016/j.msea.2012.01.12110.1016/j.msea.2012.01.121 ↗
10. 10.1016/j.msea.2014.03.01510.1016/j.msea.2014.03.015 ↗
11. 10.1016/j.msea.2010.07.01810.1016/j.msea.2010.07.018 ↗
12. 10.1016/j.msea.2011.07.05310.1016/j.msea.2011.07.053 ↗
13. 10.1016/j.msea.2011.10.03910.1016/j.msea.2011.10.039 ↗
14. 10.1016/j.msea.2013.07.06610.1016/j.msea.2013.07.066 ↗
15. 10.1016/j.msea.2011.02.05110.1016/j.msea.2011.02.051 ↗
16. Effect of solution cooling rate and post treatment on γ′ precipitation and microhardness of a novel nickel-based P/M superalloy FGH98
17. 10.1016/j.matchar.2009.12.01310.1016/j.matchar.2009.12.013 ↗
18. 10.1016/j.matchar.2011.06.00410.1016/j.matchar.2011.06.004 ↗
19. 10.1016/j.jmatprotec.2007.11.08910.1016/j.jmatprotec.2007.11.089 ↗
20. 10.1016/j.msea.2013.11.03710.1016/j.msea.2013.11.037 ↗
21. 10.1016/j.actamat.2012.09.05810.1016/j.actamat.2012.09.058 ↗
22. 10.1179/pom.1984.27.3.16910.1179/pom.1984.27.3.169 ↗
23. 10.1016/j.msea.2013.09.04910.1016/j.msea.2013.09.049 ↗
24. 10.1016/j.actamat.2005.03.01710.1016/j.actamat.2005.03.017 ↗
25. 10.1016/j.matdes.2014.02.04110.1016/j.matdes.2014.02.041 ↗
26. 10.1016/j.matchar.2012.11.01210.1016/j.matchar.2012.11.012 ↗
27. Prior particle boundary precipitation in Ni-base superalloys
28. 10.1016/j.jmatprotec.2011.01.00510.1016/j.jmatprotec.2011.01.005 ↗
29. 10.1016/j.matdes.2010.07.04010.1016/j.matdes.2010.07.040 ↗