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grain size
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in Study on Failure Analyses and Material Characterizations of a Damaged Booster Pump
> Handbook of Case Histories in Failure Analysis
Published: 01 December 2019
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Published: 01 January 2002
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Published: 01 January 2002
Fig. 83 Relationship between austenitization processing parameters and grain size for a grain-refined and non-grain-refined AISI 1060 steel. (a) Effect of austenitization temperature and 2 h soaking time. (b) Effect of austenitizing time. Source: Ref 30
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Published: 01 January 2002
Fig. 19 Erosion rate of ceramics with different grain size (frequency = 20 kHz; distance between specimen and vibration horn = 1 mm; vibration amplitude = 50 μm; temperature = 25 °C; liquid: ion-exchanged water). Source: Ref 37
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Published: 01 January 2002
Fig. 23 Effect of grain size on the ductile-to-brittle transition temperature (DBTT) of 0.11% C mild steel. Source: Ref 4
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Published: 01 January 2002
Fig. 10 Effect of grain size on time-to-fracture in ammonia atmosphere. Data are for copper alloy C26800 (yellow brass, 66%) at various values of applied stress.
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in Effects of Prior Processing on the Service Life of an 18% Nickel Maraging Steel Helicopter Landing Mount
> ASM Failure Analysis Case Histories: Air and Spacecraft
Published: 01 June 2019
Fig. 6 Microstructure of the material with grain size reticle overlay. The grains measured between ASTM Nos. 2 and 3. Marble's Reagent. Mag. 100×
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in Oxidation Cracking and Residual Creep Life of an Incoloy 800H Bottom Manifold in a Steam Reformer at 800 °C
> ASM Failure Analysis Case Histories: Chemical Processing Equipment
Published: 01 June 2019
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Published: 15 January 2021
Fig. 19 Effect of grain size on the ductile-to-brittle transition temperature of 0.11% C mild steel. Source: Ref 3
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in Wear and Failure of Babbit Bushes in Steam Turbine Sliding Bearings
> ASM Failure Analysis Case Histories: Mechanical and Machine Components
Published: 01 June 2019
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Published: 01 December 1993
Fig. 7 Results of in situ metallographic examination. (a) Grain size variations in the lower tubular portion. (b) Grain size variations in the HAZ of the upper brazed joint
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Published: 01 December 1993
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in Anomalous Fractures of Diesel Engine Bearing Cap Bolts[1]
> Handbook of Case Histories in Failure Analysis
Published: 01 December 1993
Fig. 14 Fine tempered martensitic structure in a vendor A bolt. ASTM grain size 9 to 10. Vilelia etch, 67×
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in Metallurgical Evaluation of a Five Inch Cylindrical Induction Melter
> ASM Failure Analysis Case Histories: Steelmaking and Thermal Processing Equipment
Published: 01 June 2019
Fig. 5 Photomicrograph of the new drain tube. Note small grain size with preferred orientation consistent with cold working.
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in Elevated-Temperature Life Assessment
> Analysis and Prevention of Component and Equipment Failures
Published: 30 August 2021
Fig. 2 Deformation mechanism maps for MAR-M 200 alloy at a grain size of (a) 100 μm and (b) 1 cm (0.4 in.)
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in Superplastic HSLA Steels: Microstructure and Failure
> Handbook of Case Histories in Failure Analysis
Published: 01 December 2019
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in Cracking of Aluminum Alloy Aircraft Undercarriage Forgings
> Handbook of Case Histories in Failure Analysis
Published: 01 December 1992
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in Hydrogen-Assisted Fracture of a 17-4PH Airplane Wing Component
> Handbook of Case Histories in Failure Analysis
Published: 01 December 1992
Fig. 2 (a)Macrophotograph of outboard flap support fracture. As-cast grain size can be construed from fracture surface contrast. (b) Diagram of significant features; arrows show fracture directions. Areas 1, 2, and 3 represent cleavage “flakes”. Cross-hatched area around flake 1 is overload
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in Failure and Stress Analysis of Deformed Steel Tube
> Handbook of Case Histories in Failure Analysis
Published: 01 December 2019
Book Chapter
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0045988
EISBN: 978-1-62708-235-8
... specs, but hardness and grain size were different. Reheat treatment of full-width specimens showed that coarse grain size (ASTM 2 to 3) was responsible for the brittle fracture, and excessively high temperature during austenitizing caused the large grain size in the failed strap. The fact...
Abstract
During installation, a clamp-strap assembly, specified to be type 410 stainless steel-austenitized at 955 to 1010 deg C (1750 to 1850 deg F), oil quenched, and tempered at 565 deg C (1050 deg F) for 2 h to achieve a hardness of 30 to 35 HRC, and used for securing the caging mechanism on a star-tracking telescope, fractured transversely across two rivet holes closest to one edge of the pin retainer in a completely brittle manner. Comparison with a non-failed strap using microscopic examination, spectrographic analysis, and slow-bend tests showed that both fit the 410 stainless steel specs, but hardness and grain size were different. Reheat treatment of full-width specimens showed that coarse grain size (ASTM 2 to 3) was responsible for the brittle fracture, and excessively high temperature during austenitizing caused the large grain size in the failed strap. The fact that the hardness of the strap that failed was lower than the specified hardness of 30 to 35 HRC had no effect on the failure because that of the non-failed strap was even lower. Recommendation was that the strap should be heat treated as specified to maintain the required ductility and grain size.
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