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Manganese sulfide

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Published: 01 January 2002
Fig. 14 Significant volume fraction of manganese sulfide inclusions in wedge-shaped tapered ring microstructure. 73× More
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Published: 01 June 2019
Fig. 6 Significant volume fraction of manganese sulfide inclusions in wedge-shaped tapered ring microstructure. 73× More
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Published: 15 January 2021
Fig. 13 Significant volume fraction of manganese sulfide inclusions in wedge-shaped tapered ring microstructure. Original magnification: 73 × More
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Published: 01 December 2019
Fig. 3 Manganese sulfide inclusions on a plane of ductile overload perpendicular to the rolling direction. The inclusions are not symmetric since the original rolled blank was used in a later forging operation More
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Published: 01 December 2019
Fig. 5 Manganese sulfide inclusions ( arrows ) present in a hardened, bainitic microstructure More
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Published: 01 December 2019
Fig. 6 Manganese sulfide stringers ( gray ) on a longitudinal section showing interaction with a fracture plane and resulting in a woody fracture surface More
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Published: 01 December 2019
Fig. 11 Manganese sulfide inclusions ( arrows ) near a fatigue origin More
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Published: 01 December 2019
Fig. 14 SEM image of manganese sulfide inclusions (vertical features) on a longitudinal fracture plane of embrittled material, hence the intergranular fracture of the matrix More
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Published: 01 December 2019
Fig. 7 SEM micrograph and Auger spectrum of R1 CVN fractures show manganese sulfide with oxygen, carbon, and iron. 35,000× More
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001752
EISBN: 978-1-62708-241-9
... the low sulfur steel crankshaft contained planar dimpled facets along separated grain boundaries with a small spherical manganese sulfide precipitates within each dimple. In contrast, planar dimpled facets along separated grain boundaries of impact fractures from the ultra-low sulfur crankshaft steel...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0089338
EISBN: 978-1-62708-224-2
.... The directionality of the features was found to be suggestive of shear overload. It was observed that fracture preferentially followed the nonmetallic inclusions. The fracture was revealed to be parallel to the direction of the manganese sulfide stringer inclusions. The presence of significant banding of the ferrite...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0091358
EISBN: 978-1-62708-233-4
... used in the valve. Manganese sulfide stringers in the valve were exposed at end-grain surfaces in contact with the beverage. The stringers, which were anodic to the surrounding metal, were subject to corrosion, producing a hydrogen sulfide concentration in the immediately adjacent liquid...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001780
EISBN: 978-1-62708-241-9
... Abstract A number of failures involving carbon and alloy steels were analyzed to assess the effects of inclusions and their influence on mechanical properties. Inclusions, including brittle oxides and more ductile manganese sulfides (MnS), affect fatigue endurance limit, fatigue crack...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089793
EISBN: 978-1-62708-235-8
... the main crack had propagated parallel to the fusion boundary along the subcritical HAZ and was associated with long stringers of type II manganese sulfide (MnS) inclusions. This supported the conclusion that the weld failed by lamellar tearing as a result of the high rotational strain induced at the root...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0089254
EISBN: 978-1-62708-225-9
... of the wedge-shaped middle rings fractured prior to having been fully torqued, preventing the sprocket from being locked to the shaft. “Woody” fracture features, as a result of decohesion between a high volume fractions of manganese sulfide stringers and the matrix, was revealed during examination...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001289
EISBN: 978-1-62708-215-0
.... Subsurface cracks were found to be zigzag and discontinuous as well as intergranular in nature. A mixed mode of fracture involving ductile and brittle flat facets was observed. Micropores and rod-shaped manganese sulfide inclusions were also noted. The material had a hydrogen content of 22 ppm, and cracking...
Image
Published: 01 June 2019
Fig. 9 a. In the unaffected part. Change of shape and distribution of the manganese sulfide inclusions as the weld seam is approached, longitudinal polished section, unetched. 500 × b). In the proximity of the weld seam. Change of shape and distribution of the manganese sulfide inclusions More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001206
EISBN: 978-1-62708-235-8
... ); their origin is probably due to the inclusions precipitated at the austenite grain boundaries ( Fig. 8 ). These inclusions are optically isotropic and, judging by their shape and color, appear to be sulfides of manganese. These manganese sulfides exhibit an elongated shape in the longitudinal section taken...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0090974
EISBN: 978-1-62708-235-8
..., and reevaluation of the casting design was suggested to minimize shrinkage. Brackets Castings Inclusions Manganese sulfide Shrinkage ASTM A148 grade 135-125 UNS D51250 Casting-related failures Brittle fracture A cast steel bracket manufactured in accordance with ASTM A 148 grade 135/125 failed...
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Published: 15 January 2021
Fig. 12 Higher-magnification view of fracture surface shown in Fig. 11 at origin of cracking. Arrows indicate large manganese sulfide inclusion at origin. More