Author: Siyu Wu
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Stelco, a Canadian steel making company produced a hot rolled coil of a G40.21 50WT High Strength Low Alloy (HSLA) steel. The material needed to meet a demanding Drop Weight Tear Test (DWTT) specification at -35°C. The coils produced using a coiling temperature of 540°C did not meet the DWTT specification with mixed pass/fail results. A second coil produced using a coiling temperature of 500°C met the DWTT specification, but still with mixed results. To investigate this, a two-part study was undertaken. The first part investigated the effect of coiling temperature on the microstructure and CVN impact behavior. It was found that 540°C coiling temperature resulted in a coarser grain size but less initial void/inclusion content. Furthermore, CVN testing showed that the material coiled at 540°C had better impact toughness. The second part investigated the mixed pass/fail results for the DWTT and CVN tests conducted at -35°C for the material coiled at 500°C. The results showed that there were no obvious differences between the pass and failed specimen in terms of microstructure, initial porosity, damage evolution and impact testing behavior, which suggests that the test temperature of -35°C was within the ductile-brittle transition of this material.
A Microstructural and Damage Investigation Into the Low Temperature Impact Behavior of an HSLA Steel
Author: Siyu Wu
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Stelco, a Canadian steel making company produced a hot rolled coil of a G40.21 50WT High Strength Low Alloy (HSLA) steel. The material needed to meet a demanding Drop Weight Tear Test (DWTT) specification at -35°C. The coils produced using a coiling temperature of 540°C did not meet the DWTT specification with mixed pass/fail results. A second coil produced using a coiling temperature of 500°C met the DWTT specification, but still with mixed results. To investigate this, a two-part study was undertaken. The first part investigated the effect of coiling temperature on the microstructure and CVN impact behavior. It was found that 540°C coiling temperature resulted in a coarser grain size but less initial void/inclusion content. Furthermore, CVN testing showed that the material coiled at 540°C had better impact toughness. The second part investigated the mixed pass/fail results for the DWTT and CVN tests conducted at -35°C for the material coiled at 500°C. The results showed that there were no obvious differences between the pass and failed specimen in terms of microstructure, initial porosity, damage evolution and impact testing behavior, which suggests that the test temperature of -35°C was within the ductile-brittle transition of this material.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Stelco, a Canadian steel making company produced a hot rolled coil of a G40.21 50WT High Strength Low Alloy (HSLA) steel. The material needed to meet a demanding Drop Weight Tear Test (DWTT) specification at -35°C. The coils produced using a coiling temperature of 540°C did not meet the DWTT specification with mixed pass/fail results. A second coil produced using a coiling temperature of 500°C met the DWTT specification, but still with mixed results. To investigate this, a two-part study was undertaken. The first part investigated the effect of coiling temperature on the microstructure and CVN impact behavior. It was found that 540°C coiling temperature resulted in a coarser grain size but less initial void/inclusion content. Furthermore, CVN testing showed that the material coiled at 540°C had better impact toughness. The second part investigated the mixed pass/fail results for the DWTT and CVN tests conducted at -35°C for the material coiled at 500°C. The results showed that there were no obvious differences between the pass and failed specimen in terms of microstructure, initial porosity, damage evolution and impact testing behavior, which suggests that the test temperature of -35°C was within the ductile-brittle transition of this material.
Low Temperature and Grain Size Effects on Static, Cyclic and Threshold Behavior of an HSLA Steel
Author: James P. Lucas
Publisher:
ISBN:
Category :
Languages : en
Pages : 438
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 438
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 704
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 704
Book Description
Energy Research Abstracts
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 664
Book Description
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 664
Book Description
ERDA Energy Research Abstracts
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 676
Book Description
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 676
Book Description
Applied Mechanics Reviews
Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 692
Book Description
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 692
Book Description
Metals Abstracts
Author:
Publisher:
ISBN:
Category : Metallurgy
Languages : en
Pages : 1584
Book Description
Publisher:
ISBN:
Category : Metallurgy
Languages : en
Pages : 1584
Book Description
Publications of the National Institute of Standards and Technology ... Catalog
Author: National Institute of Standards and Technology (U.S.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 1162
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 1162
Book Description
The Effect of Aging Treatment on the Microstructure and Properties of Copper-Precipitation Strengthened HSLA (High Strength Low Alloy) Steel
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
The high strength low alloy (HSLA) steels which are being developed as replacements for the HY family of steels are low carbon steels which derive their strength in part due to the precipitation of fine coherent copper particles formed during a quench and aging heat treatment. HSLA-100 is being developed to meet the strength and toughness requirements of HY-100 but can easily welded without preheat, thereby reducing fabrication costs. This investigation uses light and electron microscopy for microstructural characterization while tensile, Charpy, and hardness tests are relied upon for the mechanical properties. The microstructure and mechanical characteristics of HSLA-100 after aging at several different temperatures was correlated. A high ductility and the minimum 100 ksi yield strength was found after aging at 675 C, although this temperature was found to be close to the low eutectoid temperature displayed by HSLA-100. Splitting was observed in the tensile fracture surfaces but the mechanical properties were not adversely affected. (jes).
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
The high strength low alloy (HSLA) steels which are being developed as replacements for the HY family of steels are low carbon steels which derive their strength in part due to the precipitation of fine coherent copper particles formed during a quench and aging heat treatment. HSLA-100 is being developed to meet the strength and toughness requirements of HY-100 but can easily welded without preheat, thereby reducing fabrication costs. This investigation uses light and electron microscopy for microstructural characterization while tensile, Charpy, and hardness tests are relied upon for the mechanical properties. The microstructure and mechanical characteristics of HSLA-100 after aging at several different temperatures was correlated. A high ductility and the minimum 100 ksi yield strength was found after aging at 675 C, although this temperature was found to be close to the low eutectoid temperature displayed by HSLA-100. Splitting was observed in the tensile fracture surfaces but the mechanical properties were not adversely affected. (jes).
Physics Briefs
Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 998
Book Description
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 998
Book Description