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maraging steels metallography

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001717
EISBN: 978-1-62708-217-4
..., the pilot had to perform a low hover maneuver to the maintenance facility, where ground crews assembled concrete blocks at the appropriate height to allow the aircraft to safely touch down. The failed part was fabricated from maraging 300 grade steel (2,068 MPa [300 ksi] ultimate tensile strength...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001910
EISBN: 978-1-62708-217-4
...Abstract Abstract Breech bolt assemblies from the Gatling guns used on fighter aircraft failed during firing tests. Metallography of the failed components revealed considerable decarburization which resulted in a loss of surface hardness. It was also determined that the maraging steel...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003540
EISBN: 978-1-62708-180-1
... cases of IG fracture are described as follows ( Ref 4 ): Precipitation of AlN phase on the prior-austenite grain boundaries when steel is slowly cooled after austentization at temperatures above 1300 °C (2370 °F), or slowly cooled after casting Thermal embrittlement of maraging steels...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006777
EISBN: 978-1-62708-295-2
.... and Furubayashi E.-I. , Crack Propagation of High Strength Steels in a Gaseous Hydrogen Atmosphere , Metall. Trans. A , Vol 14 , 1983 , p 717 – 726 10.1007/BF02643788 25. Johnson W.C. and Stein D.F. , A Study of Grain Boundary Segregants in Thermally Embrittled Maraging Steel...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
... steel chemical analysis copper alloys crack initiation crack propagation duplex stainless steel ferritic stainless steel fracture surface characteristics low alloy steel macroscopic examination magnesium alloys maraging steel martensitic stainless steel metallographic analysis metalworking...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006785
EISBN: 978-1-62708-295-2
... justify the opinion which has prevailed in the United States that mild steel is embrittled by sodium hydroxide… Stress and chemical attack now appear to be the predominating factors, neither of which can produce embrittlement in the absence of the other” ( Ref 5 ). Their research showed that caustic...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003536
EISBN: 978-1-62708-180-1
... a fracture profile from the tensile fracture surface of a low-alloy steel specimen. These fracture surfaces were electroplated with copper. As illustrated by Fig. 2 , an important advantage of profilometry is that the fracture profile and the underlying microstructure can be observed simultaneously...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... that can cause specimen-scale shear banding is the combination of minimum strain hardening and negative strain-rate hardening. A second case in which the central fibrous zone is (apparently) absent has been reported in an HY-100 steel. Both cases are discussed in this article. When edge- or center...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... that can cause specimen-scale shear banding is the combination of minimum strain hardening and negative strain rate hardening. A second case in which the central fibrous zone is (apparently) absent has been reported in an HY-100 steel. Both cases are discussed in this article. When edge- or center...