1-20 of 97 Search Results for

microhardness testers

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Image
Published: 01 December 1998
Fig. 13 Principal components of a Tukon microhardness tester More
Image
Published: 01 December 2004
Fig. 4 Inverted metallograph. Features include selection of incident light, various contrasting methods, camera, and microhardness tester. Courtesy of Leica, Inc. More
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003275
EISBN: 978-1-62708-176-4
... the instrument to be set up quickly and easily. The few controls and adjustments that are required, coupled with a motor-driven probe, facilitate repeatable test results. The portability of ultrasonic microhardness testers allows hardness evaluations to be taken not only in a laboratory environment but also...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005795
EISBN: 978-1-62708-165-8
.... Fig. 13 Step-ground specimen for hardness-traverse method of measuring depth of medium and heavy cases. Arrows show locations of hardness-indenter impressions. Source: Ref 1 The accuracy of microhardness testers should be checked regularly using the calibration sample provided. Care must...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003241
EISBN: 978-1-62708-199-3
... (a) (a) (a) (a) (a) (a) (a) (a) 20 (a) 20 22 These values are approximate only and are intended primarily as a guide: see test for example of use. Materials thinner than shown may be tested on a Tukon microhardness tester. The thickness of the workpiece should be at least 1 1 2 times the diagonal...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0009001
EISBN: 978-1-62708-186-3
... microhardness tester must be used. Unfortunately, the currently available portable microhardness testers exhibit some limitations in the measurable hardness range, accuracy, and operation conditions. Further research and development efforts are needed for accurate, fast, and easy nondestructive microhardness...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003276
EISBN: 978-1-62708-176-4
..., and conventional microhardness testers, the surface being tested should be at least within 2 or 3° of flatness—that is, close to 90° of the direction of travel of the indenter. For example, when odd-shaped workpieces do not have any surfaces parallel to the surface to be tested, it is often possible to provide...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0009000
EISBN: 978-1-62708-186-3
... surfaces using a microhardness tester Figure 2 illustrates the sheet metal samples after drawing in the wear tests, where the sheet metal is HD-GA dual-phase (DP) 500 (DP500) without any stamping lubricant. Figure 3 depicts the dies and draw beads used in the wear tests. Figure 4 shows the 3-D...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003271
EISBN: 978-1-62708-176-4
... be tested with a microhardness tester. The thickness of the workpiece should be at least 1.5 times the diagonal of the indentation when using a Vickers indenter, and at least one-half times the long diagonal when using a Knoop indenter. (a) No minimum hardness for metal of equal or greater thickness...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003272
EISBN: 978-1-62708-176-4
...), a diamond indenter of specific geometry is impressed into the surface of the test specimen using a known applied force (commonly called a “load” or “test load”) of 1 to 1000 gf. Historically, the term “microhardness” has been used to describe such tests. This term, taken at face value, suggests...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006761
EISBN: 978-1-62708-295-2
... of the materials being examined. The information obtained helps the failure analyst gain an understanding of how the component or system responded to the applied forces. Also, because some mechanical properties can be correlated, tests such as hardness and microhardness of steels can be used to gain...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003302
EISBN: 978-1-62708-176-4
... measured to determine the static indentation hardness. Commercial devices, such as Equotip hardness testers, based on rebound techniques also have emerged in the market ( Ref 18 ). In this method, the hardness of a material is not determined, but a numerical measure called an “Equotip hardness number...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005628
EISBN: 978-1-62708-174-0
... a singularity, exists at the vicinity of the weld. Stress distribution is also a strong function of material strength, which varies (often drastically) from the base metal to the nugget, as exhibited by the microhardness profiles in a weldment. Because a softer material would deform more than a harder one...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006275
EISBN: 978-1-62708-169-6
... of the specimens using a Reichert microhardness tester (5.3 g, or 0.2 oz, load, applied for 10 s). Test Results Results of hardness testing showed that lead-antimony alloys of commercial purity demonstrate significant age hardening, particularly after solution treating, as shown in Fig. 1 and 2...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005857
EISBN: 978-1-62708-167-2
...) Surface hardness Microhardness tester 1/each setup Case depth Microhardness per standard 1/each setup Pattern Visual 1/each setup Microstructure Microscope 1/each setup Surface crack Magnetic particle inspection 1/each setup Periodic in-process inspection Surface hardness...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003274
EISBN: 978-1-62708-176-4
... the entire hardness-load curve, but in practice testers often chose one reference or standard load to allow comparisons between materials. It is preferable to make the indentations as large as possible to reduce measurement uncertainties, yet not so large as to induce excessive cracking that interferes...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005730
EISBN: 978-1-62708-171-9
... Superficial hardness E384 Microhardness E1920 Metallographic preparation E2109 Microstructural evaluation G59 Microstructural evaluation G106 Microstructural evaluation B117 Microstructural evaluation Hardness Testing Hardness measurement of thermal spray coatings...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0005586
EISBN: 978-1-62708-170-2
... hardness tester DBT ductile-to-brittle transition dc direct current dhcp double hexagonal close-packed diam diameter DIBS dual-ion-beam sputtering DIN Deutsche Industrie-Normen (German Industrial Standards) DLC diamondlike carbon dL / dX...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006649
EISBN: 978-1-62708-213-6
... powder softens. To measure particle hardness, indentation hardness tests, such as the Vickers microhardness (MHV) test, can be used. Under an optical measurement system, a pyramidal-pointed diamond is impressed into the particle surface by a controlled loading force ranging from 0.10 to 1.0 N (0.01...
Book Chapter

Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006359
EISBN: 978-1-62708-192-4
... 2b ), out of electromechanical printer mechanisms. They used various material combinations, stress range, lubrication conditions, and other parameters to optimize various machine contacts. Rice ( Ref 12 ) built a reciprocating impact wear tester and investigated, with his coworkers, a range of wear...