Author: George HallermanPublisher:
ISBN:
Category : Hardness
Languages : en
Pages : 38
Book Description
Equipment for Hardness Testing at Elevated Temperatures
Author: George HallermanPublisher:
ISBN:
Category : Hardness
Languages : en
Pages : 38
Book Description
Equipment for Hardness Testing at Elevated Temperatures
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The design and testing procedures of two elevatedtemperature hardness testers are described. One device uses a Rockwell tester with a large vertical capacity and a load range of 15 to 150 kg. The tester is equipped with a 900 deg C heating chamber which maintains an argon atmosphere over the specimen and can be laterally displaced by a cross-feed mechanism to allow repeated hardness readings to be made on the same specimen. The second instrument is a microindentation hardness tester for hardness determinations to a maximum temperature of 1000 deg C in vacuum of 10/sup -4/ to 10/sup -5/ torr. A deadweight loading system with a 136-deg diamond pyramid (Vickers) indenter, capable of delivering static loads between 0.150 and 3 kg, is contained within the vacuum chamber to avoid calibration problems that arise when loads are applied from outside the vacuum system. The microindentation hardness tester allows up to 100 determinations to be made on a single specimen without opening the test chamber. The applicability of the testers is illustrated by elevatedtemperature hardness measurements on several commercial alloys, a group of niobium-vanadium alloys, and by the changes in hardness occurring at the transformation temperatures of iron and steel. Hardness values of Haynes alloy No. 25 were determined at the temperatures of aging and are shown to be different from those obtained with the customary method of investigating age hardening. The testing is currently being used to aid and accelerate the development of alloys with desirable high-temperature properties. (auth).
Hardness Testing, 2nd Edition
Author: Harry ChandlerPublisher: ASM International
ISBN: 9781615032211
Category : Technology & Engineering
Languages : en
Pages : 210
Book Description
This book provides a comprehensive overview of hardness testing, including the various methods and equipment used, testing applications and the selection of testing methods. The revised and updated second edition features expanded information on microhardness testing, specialized hardness tests, and hardness testing standards. Contents: Introduction to Hardness Testing Brinell Testing Rockwell Hardness Testing Vickers Hardness Testing Microhardness Testing Scelroscope and Leeb Hardness Testing Hardness Testing Application Selection of Hardness Testing Materials Appendices Index.
Hardness Testing
Author: Konrad HerrmannPublisher: ASM International
ISBN: 1615038477
Category : Technology & Engineering
Languages : en
Pages : 262
Book Description
General Register
Author: University of MichiganPublisher:
ISBN:
Category : Detroit (Mich.)
Languages : en
Pages : 1130
Book Description
Announcements for the following year included in some vols.
University of Michigan Official Publication
Author: Publisher: UM Libraries
ISBN:
Category : Education, Higher
Languages : en
Pages : 1040
Book Description
Scientific and Technical Aerospace Reports
Author: National Educators' Workshop, Update 93
Author: Aviation Unit and Intermediate Maintenance for Army UH-60A and EH-60A Helicopters
Author: Publisher:
ISBN:
Category : Military helicopters
Languages : en
Pages : 1062
Book Description
Mechanical World and Engineering Record
Author: Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 876
Book Description