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ductile striation formation

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Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002349
EISBN: 978-1-62708-193-1
... the cause of cracking or crack growth. This article discusses the macroscopic and microscopic basis of understanding and modeling fracture resistance of metals. It describes the four major types of failure modes in engineering alloys, namely, dimpled rupture, ductile striation formation, cleavage...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002352
EISBN: 978-1-62708-193-1
... band emergence Cleavage or intergranular fracture Origin area may contain an imperfection or stress concentrator Progressive zone: worn appearance, flat, may show striations at magnifications above 500× Overload zone: may be either ductile or brittle Path of penetration may be irregular...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006323
EISBN: 978-1-62708-179-5
... surfaces of ausferritic ductile iron (ASTM A536, 200-75-02 grade) showing microvoid formation in the metallic matrix. (a) Fracture surface generated from quasi-static loading at 20 °C (68 °F). (b) Fracture surface generated from impact loading at 20 °C (68 °F). SEM. Source: Ref 9 Fig. 8...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
...): Monotonic versus fatigue fracture: Beach marks and striations indicate fatigue, but their absence does not confirm fracture from monotonic loads. Fracture surfaces from fatigue do not always reveal beach marks and fatigue striations. Macroscale ductile versus brittle fracture: Macroscale ductile...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
... corrosive environment and ductile fracture Crack propagates parallel to flutes Striated or ridged fracture Cyclic loading fatigue striations; Constant spacing, constant stress amplitude; variable spacing, variable stress amplitude or block loading (see Fig. 52 ) Striated surface caused...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003466
EISBN: 978-1-62708-195-5
... systems but seemed to exhibit considerably more matrix plasticity, as shown in Fig. 19 . The striations in these thermoplastic materials also tend to take on a somewhat irregular shape, often following the ductile matrix material; in brittle thermoset composites, the striations are generally sharp...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003226
EISBN: 978-1-62708-199-3
... showing fibrous zone (A), radial zone (B), and shear lip (C). 3× The formation of cracks under conditions of repeated or cyclic stress has been denoted as fatigue cracking. Zones of crack propagation on fatigue fractures exhibit several types of surface marks, such as beach marks, striations...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003226
EISBN: 978-1-62708-199-3
...). 3× Fatigue Marks The formation of cracks under conditions of repeated or cyclic stress has been denoted as fatigue cracking. Zones of crack propagation on fatigue fractures exhibit several types of surface marks, such as beach marks, striations, and ratchet marks. Beach Marks...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000621
EISBN: 978-1-62708-181-8
... are not visible. See also Fig. 1026 . SEM, 1000× Fig. 1026 Area outlined by the rectangle in Fig. 1025 , as seen at triple the magnification there. Fatigue striations, which are about an order of magnitude smaller than the steplike formations, are faintly visible parallel with the edges of the “steps...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005657
EISBN: 978-1-62708-198-6
... surface features are fatigue striations. Fracture surface rubbing commonly results in parallel ridges that resemble fatigue striations; very ductile fractures can exhibit slip lines that can look like fatigue striations; and fractures in very brittle materials such as glass and ceramics can produce...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006776
EISBN: 978-1-62708-295-2
... of progressive stable crack growth ( Ref 21 ) ( Fig. 29 , 30 ). Similarly, curved ridges can form during ductile overload of low-alloy steel ( Fig. 31 ). Transitions in fracture mechanism or morphology (e.g., from ductile microvoid formation to cleavage fracture) can also produce curved marks on fracture...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003539
EISBN: 978-1-62708-180-1
... ductile microvoid formation to brittle fracture) can also produce curved marks on fracture surfaces. Such transitions can be caused, for example, by changes in underlying microstructure. The presence of marks such as these does not denote progressive fatigue fracture. Fig. 29 Low-magnification view...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001835
EISBN: 978-1-62708-181-8
... fractographs: ductile fracture (left) and transgranular fracture (right). Fig. 6 (a) Chevrons (arrows) emanating from the fracture origin in a bolt that failed under conditions of bending overload. (b) SEM fractographs of the origin and fracture surface shown in (a) Fig. 9 Formation...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000609
EISBN: 978-1-62708-181-8
... , 282 , and 283 . SEM, 1055× (A.D. Wilson, Lukens Steel Company) Effect of inclusions on fatigue crack propagation (FCP) in ASTM A514F. Direction of FCP is toward the top. Fig. 581 : Area of fracture surface not near inclusion formations shows primarily ductile fatigue striations. Also note...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000610
EISBN: 978-1-62708-181-8
.... It was then mechanically polished, electropolished, and passivated. Fig. 661 : Fracture surface. Note beach marks. 5.2×. Fig. 662 : Fatigue striations on fracture surface. SEM, 1360×. Fig. 663 : Region of dimpled rupture in ductile overload zone of fracture surface in Fig. 661 . Note burnishing. See also Fig. 670...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003541
EISBN: 978-1-62708-180-1
... no observable gross plastic deformation, only abrupt failure. Fig. 2 Typical creep and creep rupture behavior of ductile polymers Fig. 3 Typical creep and creep rupture behavior of nonductile, or brittle, polymers Cavitation and microvoid formation in polymers differs from that in metals...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001819
EISBN: 978-1-62708-180-1
... on the shape of the implant and the application. Good ductility (discussed below) is often desired. The following is a list of major standards for orthopedic implant materials: Stainless steel: ASTM F 55-82, ASTM F 56-82, ASTM F 138-82, ASTM F 139-82 (contains remelted Special Quality), ISO/DIS...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000614
EISBN: 978-1-62708-181-8
..., fibrous fracture, crack-initiation zone, microvoid coalescence, fatigue-crack surface, hydrogen embrittlement, and fatigue striations of these steels. fatigue fracture fractograph maraging steel shrinkage cavities tensile-test fracture Fig. 798 Surface of a fracture in a tensile-test...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001831
EISBN: 978-1-62708-181-8
... reduces slip reversal during crack closure, which results in the formation of striations ( Ref 19 , 25 , 26 ). The lack of oxidation in hard vacuum promotes a more complete slip reversal ( Ref 27 ), which results in a smooth and relatively featureless fatigue fracture surface. Some fracture surfaces...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001834
EISBN: 978-1-62708-181-8
... by light microscopy, SEM, or replica transmission electron microscopy (TEM) to determine the fracture mode, to confirm the fracture mechanism (observation of cleavage facets, ductile dimples, fatigue striations, and so on), and to detect features at the fracture origin Examine metallographic cross...