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Keywords: Microstructure
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Proceedings Papers

Proc. ASME. PVP2021, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A036, July 13–15, 2021
Paper No: PVP2021-62779
...Abstract Abstract The prediction of damage mechanisms, such as fatigue in e.g. piping, requires the consideration of the microstructure because crack initiation starts at the grain level. Therefore, it is important to know the local strain/stress state, which due to the misorientation...
Proceedings Papers

Proc. ASME. PVP2021, Volume 4: Materials and Fabrication, V004T06A041, July 13–15, 2021
Paper No: PVP2021-61633
... Proceedings of the ASME 2021 Pressure Vessels & Piping Conference PVP2021 July 13-15, 2021, Virtual, Online PVP2021-61633 MICROSTRUCTURE CONTROL AND OPTIMIZATION OF CENTRIFUGAL CASTING FURNACE TUBE HP40 ALLOYS BASED ON CAFE MODEL S.L. Xiang, T. Chen, Z.C. Fan, X.M. Lian, X.D. Chen a. Hefei General...
Proceedings Papers

Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A035, August 3, 2020
Paper No: PVP2020-21235
... properties is critical but difficult until now. In this work, the ML method based on the deep learning algorithm is developed to establish the direct correlation between microstructure inputs and output stress rupture properties of Fe-Cr-Ni based heat resistant alloys. Two simple convolutional neural...
Proceedings Papers

Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A058, August 3, 2020
Paper No: PVP2020-21201
... stress conditions. An understanding of the long-term microstructural evolution under actually used conditions is a key for the improvement of these heat resistant steels. In this article, microstructural evolution of Grade 91 steel under different service conditions in Chinese power plants was studied...
Proceedings Papers

Proc. ASME. PVP2010, ASME 2010 Pressure Vessels and Piping Conference: Volume 6, Parts A and B, 3-12, July 18–22, 2010
Paper No: PVP2010-25064
... mechanisms, provides case histories, suggests mitigation practices, and stresses the importance of proper alloy characterization, and using conservative Code allowable safety factors. Hot-forming work-hardening strain hardening recovery recrystallization austenitic stainless steel microstructure...
Proceedings Papers

Proc. ASME. PVP2009, Volume 6: Materials and Fabrication, Parts A and B, 1751-1754, July 26–30, 2009
Paper No: PVP2009-77249
...: zhangxiaoli2004@sohu.com Abstract: The Mo(Si, Al)2-SiC composite was prepared by infiltrating melted aluminum into MoSi2+C compacts at 1350°C, and the microstructure and mechanical property of this composite were analyzed. The results showed that the phases of these composite are Mo(Si1-x,Alx)2 and SiC...
Proceedings Papers

Proc. ASME. PVP2007, Volume 6: Materials and Fabrication, 527-533, July 22–26, 2007
Paper No: PVP2007-26820
...: no HGE. High grade linepipe Bend pipe Toughness index Microstructure Fracture Proceedings of ASME PVP2007/Creep 8 2007 ASME Pressure Vessels and Piping/Creep 8 Conference A d The IRH tha me we exa ide SU II, SU INT cau dec thro use Proceedings of PVP2007 2007 ASME Pressure Vessels...
Proceedings Papers

Proc. ASME. PVP2007, Volume 6: Materials and Fabrication, 671-676, July 22–26, 2007
Paper No: PVP2007-26808
.... and This is different from that of mother pipe. To find the reasons, the fractures and microstructure of these reheated linepipes are analysed and compared with that of mother pipes. High grade linepipe Bend pipe Toughness index Microstructure Fracture Proceedings of PVP2007 2007 ASME Pressure Vessels...
Proceedings Papers

Proc. ASME. PVP2008, Volume 1: Codes and Standards, 669-673, July 27–31, 2008
Paper No: PVP2008-61062
... increased continuously, the shearing area would not increase further more. So the selection of charpy toughness value as 200J for pipeline steels is reasonable, and also its corresponding shearing area. To gain thus component index, the optimum microstructure of X80 steel should be strip-like ferrite...
Proceedings Papers

Proc. ASME. PVP2008, Volume 6: Materials and Fabrication, Parts A and B, 1511-1532, July 27–31, 2008
Paper No: PVP2008-61584
... hardening exponent, n , of the same model, (4) the yield stress, σ y , (5) the critical local fracture stress, σ f , (6) a chemical composition parameter in the form of the ratio of manganese to carbon content, Mn/C , (7) the crack depth/width ratio, a/W , and (8) the critical microstructural...
Proceedings Papers

Proc. ASME. PVP2004, Recent Advances in Nondestructive Evaluation Techniques for Material Science and Industries, 147-152, July 25–29, 2004
Paper No: PVP2004-2829
.... It is noticeable that, to take into account of microstructure influence on ultrasonic behavior of the weld, the measurement were calibrated on samples machined in the melted zone and in parent metal. The results obtained by the ultrasonic Lcr waves technique were compared with those obtained by “reference...
Proceedings Papers

Proc. ASME. PVP2006-ICPVT-11, Volume 6: Materials and Fabrication, 591-598, July 23–27, 2006
Paper No: PVP2006-ICPVT-11-93268
... 21 07 2008 The microstructure determines the resistance of polycrystalline materials to intergranular stress corrosion cracking to a large extent. The random grain boundaries are prone to sensitisation and form paths of low resistance for intergranular cracks to follow. The non...