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Book Chapter

Cast Steel Pinion Gear Shafts with Insufficient Elongation

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By Friedrich Karl Naumann, Ferdinand Spies
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001254
EISBN: 978-1-62708-225-9
... Abstract The specified elongation of 10% could not be achieved in several hollow pinion gear shafts made of cast Cr-Mo steel GS 35 Cr-Mo 5 3 that were heat treated to a strength of 90 kp/sq mm. The steel was melted in a basic 3 ton arc furnace and deoxidized in the furnace and in the pan...
Abstract
The specified elongation of 10% could not be achieved in several hollow pinion gear shafts made of cast Cr-Mo steel GS 35 Cr-Mo 5 3 that were heat treated to a strength of 90 kp/sq mm. The steel was melted in a basic 3 ton arc furnace and deoxidized in the furnace and in the pan with a total of 7 kg aluminum. Fracture of a tensile specimen occurred with low elongation and, apparently, also with low reduction of area. In some places it was coarse grained conchoidal. It was found that the exceptionally low elongation of the cast specimens was due to excessive deoxidation by aluminum.
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Relation of elongation and rupture life for Co-Cr-Ni-base alloy S-590 teste...

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in Creep and Stress Rupture Failures > Failure Analysis and Prevention
Published: 01 January 2002
Fig. 7 Relation of elongation and rupture life for Co-Cr-Ni-base alloy S-590 tested at two temperatures at different stresses. Source: Ref 10 More
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Relation of elongation and rupture life for Co-Cr-Ni-base alloy S-590 teste...

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in Creep and Stress-Rupture Failures > Failure Analysis and Prevention
Published: 15 January 2021
Fig. 8 Relation of elongation and rupture life for Co-Cr-Ni-base alloy S-590 tested at two temperatures at different stresses. Source: Ref 18 More
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Subsurface inclusion cluster of tensile specimen with 7% elongation.

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in Investigation of Cracking and Erratic Behavior of the Uranium-Titanium Alloy > ASM Failure Analysis Case Histories: Processing Errors and Defects
Published: 01 June 2019
Fig. 3 Subsurface inclusion cluster of tensile specimen with 7% elongation. More
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Total elongation (in tension) as a function of dose for the current tests (...

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in Failure Analysis of a Radio-Activated Accelerator Component > ASM Failure Analysis Case Histories: Failure Modes and Mechanisms
Published: 01 June 2019
Fig. 24 Total elongation (in tension) as a function of dose for the current tests (♦), data from Ref 10 (▪), and neutron-irradiated alloy 718 from EBR II (X, Δ) 1 More
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Showing minimum elongation of copper in region of 550°–600°C.

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in Brittleness in Copper and Copper Alloys With Particular Reference to Hydrogen Embrittlement > ASM Failure Analysis Case Histories: Processing Errors and Defects
Published: 01 June 2019
Fig. 20 Showing minimum elongation of copper in region of 550°–600°C. More
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The effect of moisture on the tensile, elongation, and impact strength of p...

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in Manufacturing-Related Failures of Plastic Parts > Characterization and Failure Analysis of Plastics
Published: 15 May 2022
Fig. 3 The effect of moisture on the tensile, elongation, and impact strength of polyester. Adapted from Ref 4 More
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Variation of ultimate strength, yield stress, and elongation with temperatu...

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in Crazing and Fracture in Polymers > Characterization and Failure Analysis of Plastics
Published: 15 May 2022
Fig. 7 Variation of ultimate strength, yield stress, and elongation with temperature for cellulose acetate. Adapted from Ref 10 More
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Microstructure of sample 2a, 6.3 mm (¼ in.) from fracture. Elongation of gr...

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in Metallurgical Failure Analysis of a Propane Tank Boiling Liquid Expanding Vapor Explosion (BLEVE) > Handbook of Case Histories in Failure Analysis
Published: 01 December 2019
Fig. 6 Microstructure of sample 2a, 6.3 mm (¼ in.) from fracture. Elongation of grains is due to elevated-temperature deformation. More
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Microstructure of sample 2a at fracture. Severe elongation of grains is obs...

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in Metallurgical Failure Analysis of a Propane Tank Boiling Liquid Expanding Vapor Explosion (BLEVE) > Handbook of Case Histories in Failure Analysis
Published: 01 December 2019
Fig. 8 Microstructure of sample 2a at fracture. Severe elongation of grains is observed due to elevated-temperature deformation. Similar elongation was seen at all locations on side A where substantial thinning had occurred. More
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Severe elongation of grains in formed adiabatic shear bands in vicinity of ...

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in The Role of Impact Energy in Failure of Explosive Cladding of Inconel 625 and Steel > Handbook of Case Histories in Failure Analysis
Published: 01 December 2019
Fig. 10 Severe elongation of grains in formed adiabatic shear bands in vicinity of interface More
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Elongated surface cavities on the inside surface of a 70-30 cupronickel tub...

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in Examination of Damage and Material Evaluation > Failure Analysis and Prevention
Published: 01 January 2002
Fig. 8 Elongated surface cavities on the inside surface of a 70-30 cupronickel tube produced by erosion-corrosion. The tube surface is clean, the attack having occurred due to brine flowing through it at 70 °C (158 °F) with turbulent flow and an excessive level of dissolved oxygen. More
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Elongated surface cavities on the inside surface of a 70-30 cupronickel tub...

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in Examination of Damage and Material Evaluation[1] > Failure Analysis and Prevention
Published: 15 January 2021
Fig. 8 Elongated surface cavities on the inside surface of a 70-30 cupronickel tube produced by erosion-corrosion. The tube surface is clean, the attack having occurred due to brine flowing through it at 70 °C (160 °F) with turbulent flow and an excessive level of dissolved oxygen. More
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Polarized light image (90×) of elongate yellow-hued carbonate-enriched reac...

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in Corrosion Failure of the Rocky Point Viaduct > ASM Failure Analysis Case Histories: Buildings, Bridges, and Infrastructure
Published: 01 June 2019
Fig. 3 Polarized light image (90×) of elongate yellow-hued carbonate-enriched reaction product More
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Region showing elongated dimples (microvoid coalescence) in the exemplar to...

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in Failure Analysis of a Spoon Broken by a Parapsychic Person > ASM Failure Analysis Case Histories: Household Products and Consumer Goods
Published: 01 June 2019
Fig. 6 Region showing elongated dimples (microvoid coalescence) in the exemplar torsional load specimen. More
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Microstructure of the bellows material, showing flow lines and elongated gr...

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in Failure of AISI Type 347 Stainless Steel Bellows > Handbook of Case Histories in Failure Analysis
Published: 01 December 1993
Fig. 3 Microstructure of the bellows material, showing flow lines and elongated grains More
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Rear valve guide, showing transverse fracture through an elongated hole. No...

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in Failure of a Transport Aircraft Relay Valve Guide > Handbook of Case Histories in Failure Analysis
Published: 01 December 1993
Fig. 1 Rear valve guide, showing transverse fracture through an elongated hole. No plastic deformation was evident around the fracture zone. More
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Counter-rotating drums for determining the elongational viscosity of a poly...

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in Rheological Testing of Polymers > Characterization and Failure Analysis of Plastics
Published: 15 May 2022
Fig. 24 Counter-rotating drums for determining the elongational viscosity of a polymer melt More
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Graph of elongational viscosity versus time for 2.3 MI polyethylene samples...

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in Rheological Testing of Polymers > Characterization and Failure Analysis of Plastics
Published: 15 May 2022
Fig. 25 Graph of elongational viscosity versus time for 2.3 MI polyethylene samples. LDPE, low-density polyethylene; LLDPE, linear low-density polyethylene More
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Hydrogen induced microcracks emanated from ( a ) elongated FeS, ( b ) acicu...

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in Failure Analysis: Sulfide Stress Corrosion Cracking and Hydrogen-Induced Cracking of A216-WCC Wellhead Flow Control Valve Body > Handbook of Case Histories in Failure Analysis
Published: 01 December 2019
Fig. 8 Hydrogen induced microcracks emanated from ( a ) elongated FeS, ( b ) acicular MnS inclusion in A216 steel More