Author: Ralph Ivan StephensPublisher: ASTM International
ISBN: 9780803104112
Category : Technology & Engineering
Languages : en
Pages : 329
Book Description
Fatigue at Low Temperatures
Author: Ralph Ivan StephensPublisher: ASTM International
ISBN: 9780803104112
Category : Technology & Engineering
Languages : en
Pages : 329
Book Description
Fatigue And Fracture Toughness Of Five Carbon Or Low Alloy Cast Steels At Room And Low Climatic Temperatures
Author: Ralph I. StephensCasting Design and Performance
Author: Publisher: ASM International
ISBN: 1615031324
Category : Science
Languages : en
Pages : 271
Book Description
Fatique and Fracture Toughness of Five Carbon Or Low Alloy Cast Steels at Room Or Low Climatic Temperatures
Author: Ralph Ivan StephensPublisher:
ISBN:
Category : Steel alloys
Languages : en
Pages :
Book Description
Variable-Amplitude Fatigue Crack Initiation and Growth of Five Carbon Or Low-Alloy Cast Steels at Room and Low Climatic Temperatures
Author: A. FatemiPublisher:
ISBN:
Category : Crack growth
Languages : en
Pages : 20
Book Description
Five common cast steels were subjected to SAE transmission history at room temperature and three low climatic temperatures using an as-drilled keyhole notched compact specimen. The three low temperatures were -34, -45, and -60°C. These temperatures were both above and below nil ductility transition temperatures. Three fatigue criteria were specifically monitored: crack initiation defined by the first visible surface crack ?a equal to 0.25 mm, ?a equal to 2.5 mm, and final fracture. All low-temperature total fatigue lives were equal to or better than at room temperature for four of the five cast steels. All steels exhibited crack initiation lives at low temperatures equal to or better than at room temperature. Fatigue crack growth life tended to increase as the temperature was lowered, and then this trend reversed. Scanning electron fractographic analysis showed all ductile type fatigue crack growth mechanisms above or below the nil ductility transition temperature.
Constant-Amplitude Fatigue Behavior of Five Carbon Or Low-Alloy Cast Steels at Room Temperature and -45°C
Author: JH. ChungPublisher:
ISBN:
Category : Crack growth
Languages : en
Pages : 21
Book Description
Five common carbon or low-alloy cast steels--SAE 0030, SAE 0050A, C-Mn, Mn-Mo and AISI 8630--were subjected to constant-amplitude fatigue tests at room temperature and at the common low climatic temperature of -45°C (-50°F). Tests included smooth specimen axial low and high cycle fatigue and compact type (CT) specimen crack growth behavior from 10-5 n/cycle (4 x 10-4 in./cycle) to threshold values at 10-10 m/cycle (4 x 10-9 in./cycle). Three of the five steels had nil ductility transition temperatures above the low test temperature. Despite this, all five cast steels showed equivalent or better fatigue resistance at the low temperature, except for some very short life low-cycle fatigue tests and for some very high fatigue crack growth rates where fracture was imminent. Scanning electron fractographic analysis indicated that ductile type fatigue crack growth mechanisms with or without striations occurred for all steels at both test temperatures except for a few interdispersed cleavage facets in 0050A steel at very high crack growth rates. At the low temperature, monotonic and cyclic stress-strain properties Su, Sy, and Sy' increased by an average of about 10%, fatigue limits increased from 2 to 25%, and ?Kth increased from 0 to 90%. No consistent correlations existed between fatigue and monotonic properties at either temperature. Mean stress effects at near ?Kth levels appeared to be influenced by crack closure.
Journal of Engineering Materials and Technology
Author: ASM Handbook
Author: ASM International. Handbook CommitteePublisher:
ISBN:
Category : Fracture mechanics
Languages : en
Pages : 1080
Book Description
These volumes cover the properties, processing, and applications of metals and nonmetallic engineering materials. They are designed to provide the authoritative information and data necessary for the appropriate selection of materials to meet critical design and performance criteria.
Fatigue and fracture Toughness - cryogenic behavior
Author: C. F. HickeyPublisher: ASTM International
ISBN: 9780803103436
Category : Technology & Engineering
Languages : en
Pages : 196
Book Description
Author: