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Microstructure

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001592
EISBN: 978-1-62708-228-0
... developed to control and avoid those failures. This study presents various failure cases of sucker rods in different applications. The heat treatment of the steel material and the resulting microstructure are an important factor in the behavior of the sucker rod. A spheroidized microstructure presents...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001535
EISBN: 978-1-62708-232-7
... Abstract Although a precise understanding of roll failure genesis is complex, the microstructure of a broken roll can often unravel intrinsic deficiencies in material quality responsible for its failure. This is especially relevant in circumstances when, even under a similar mill-operating...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0047140
EISBN: 978-1-62708-234-1
... that superficial working of the metal, probably insufficient hot working, produced a microstructure in which the carbide particles were not broken up and evenly distributed. As a result, the grains were totally surrounded with brittle carbide particles. This facilitated the formation of a crack at a fillet...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001816
EISBN: 978-1-62708-241-9
... by the polycrystalline arrangement [ 1 ]. Two mechanisms are considered to take place in the material: grain boundary migration and grain boundary shearing/sliding. Theoretic and microstructural models agree that the most important feature of this behavior is the grain boundary sliding (GBS). Nevertheless, dislocations...
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Published: 01 June 2019
Fig. 6 Microstructure of the rotor housing. (a) General microstructure. 100x. (b) Ferritic matrix with spheroidized pearlite. 500x. Both etched with nital More
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Published: 01 June 2019
Fig. 7 Microstructure of AISI 4130 steel. This microstructure is representative of the intentionally tested BFA shown in Figure 5 . More
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Published: 01 June 2019
Fig. 4 a). Microstructure of core 100 × b). Microstructure of core 500× More
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Published: 01 December 1993
Fig. 5 Microstructure of the feedwater piping. The microstructure consists of pearlite and ferrite. Nital etch. (a) 61×. (b) 488×. More
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Published: 01 December 1993
Fig. 5 Microstructure of U-bend sample T4. The microstructure consists of pearlite in a ferrite matrix. Nital etch. 608×. More
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Published: 01 December 1993
Fig. 3 Microstructure of the swaged section of the tube. The microstructure consists of austenite grains with carbides along the grain boundaries and slip lines within the grains. Oxalic acid electrolytic etch. Top, 62×, Bottom, 496× More
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Published: 01 December 2019
Fig. 5 Microstructure of sample 3a far from the fracture surface. Microstructure is similar to Fig. 4 , indicating that reaustenitization had not occurred. More
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Published: 01 June 2019
Fig. 4 Microstructure of thermally disturbed zone adjacent to weld. × 500 More
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Published: 01 June 2019
Fig. 13 Microstructure at center of Bolt 23 (AXR; type E composition) More
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Published: 01 June 2019
Fig. 14 Microstructure at center of Bolt 24 (Wriggle; type A composition) More
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Published: 01 June 2019
Fig. 15 Microstructure at center of Bolt 14 (AVH; type D composition) More
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Published: 01 June 2019
Fig. 16 Microstructure at center of Bolt 4 (Threadbar; type B composition) More
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Published: 01 June 2019
Fig. 17 Microstructure at center of Bolt 28 (Tempcore X; type E composition) More
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Published: 01 June 2019
Fig. 18 Microstructure at center of Bolt 1 (HPC; type C composition) More
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Published: 01 June 2019
Fig. 4 Microstructure of the damaged area, reformed austenite and martensite. Microhardness 924 HV. 400 × More
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Published: 01 June 2019
Fig. 3 Microstructure in edge zone, etch: Picral. 100 × More