scholarly journals Study on the effect of grain refinement of deformable heat treatment on steel properties

2021 ◽  
Vol 634 (1) ◽  
pp. 012089
Author(s):  
Aining Jin
Keyword(s):  
Heat Treatment ◽  
Grain Refinement ◽  
Steel Properties

scholarly journals Investigating Corrosion Resistance of Heavy-Duty Steel Fasteners Regarding Assemblies Operating in Maritime Climates under High Pressures Power, Metallurgical and Chemical Engineering

2020 ◽  
pp. 94-106
Author(s):  
K.I. Nedashkovskiy ◽  
A.V. Gulshin ◽  
Yu.M. Averina ◽  
V.A. Naumkina ◽  
V.V. Menshikov ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Grain Refinement ◽  
Chemical Engineering ◽  
High Pressures ◽  
Heavy Duty ◽  
High Temperature Heat Treatment ◽  
Temperature Heat ◽  
Temperature Heat Treatment

The paper presents investigation results and a technology for manufacturing fastener workpieces out of the 07Kh16N6-Sh (07Х16Н6-Ш) steel using high-temperature heat treatment. The steel undergoing our testing was additionally doped with molybdenum, as reflected in the 07Kh16N6M-Sh (07Х16Н6М-Ш) designation, which facilitated grain refinement. We implemented accelerated climate testing of bolts in order to assess the corrosion cracking resistance of 07Kh16N6-Sh (07Х16Н6-Ш), 07Kh16N6M-Sh (07Х16Н6М-Ш) and 13Kh15N4AM3-Sh (13Х15Н4АМ3-Ш) steel fasteners in maritime climates.

Role of Heat Treatment on Grain Refinement and Microhardness of 9Cr–1Mo–V–Nb Steel

2019 ◽  
Vol 8 (4) ◽  
pp. 472-478
Author(s):  
Chandan Pandey ◽  
S. Sirohi ◽  
M. M. Mahapatra ◽  
Pradeep Kumar ◽  
K. K. Bansal
Keyword(s):  
Heat Treatment ◽  
Grain Refinement

The Microscopic Analysis on the Crankshaft Fracture Surface of the Compressor

2014 ◽  
Vol 912-914 ◽  
pp. 837-840
Author(s):  
Wei Dong Chen
Keyword(s):  
Heat Treatment ◽  
Brittle Fracture ◽  
Fracture Surface ◽  
Grain Refinement ◽  
Stress Fracture ◽  
Failure Modes ◽  
Microscopic Analysis ◽  
Dendritic Segregation ◽  
Micro Analysis

Fracture is the most common failure modes of the crankshaft, under normal circumstances often result in serious consequences. So study the reasons for the crankshaft fracture, thus achieving the purpose of controlling and reducing accidents, is very realistic. In this paper, for example, a factory break 4M16 compressor crankshaft. Through micro-analysis of the crankshaft fracture, the 4M16 compressor crankshaft is a low stress fracture of brittle fracture .The fracture is mainly due to dendritic segregation cause tissue caused by uneven. Solution to the problem is to increase the ratio of forging the forging, heat treatment when the grain refinement.

Heat Treatment Influence over the Austenitic Stainless Steel Properties used as Biomaterials

2003 ◽  
Vol 426-432 ◽  
pp. 3295-3298
Author(s):  
Ilie Butnariu ◽  
Ioan Orbescu ◽  
Constantin Păun ◽  
Dan Durleci ◽  
Cristian Rizea ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Steel Properties

Effect of Grain Refinement on Mechanical Properties in 25Cr-1N Austenitic Steel

2010 ◽  
Vol 638-642 ◽  
pp. 3549-3554 ◽  
Author(s):  
Toshihiro Tsuchiyama ◽  
T. Onomoto ◽  
K. Tsuboi ◽  
Setsuo Takaki
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Stress Concentration ◽  
Grain Refinement ◽  
Intergranular Fracture ◽  
Tensile Deformation ◽  
Austenitic Steels ◽  
High Yield ◽  
Structure Characteristic ◽  
Step Heat Treatment

The Fe-25Cr-1N alloy produced by solution nitriding possesses extremely high yield strength owing to the solid solution strengthening by nitrogen. However, it was found that the steel exhibited an insufficient elongation because of the brittle intergranular fracture caused during the uniform tensile deformation. This is due to the marked stress concentration at grain boundaries, which is derived from the grain coarsening caused during long time solution nitriding and the development of planar dislocation structure characteristic of high nitrogen austenitic steels. The most effective way to reduce the stress concentration at grain boundary during deformation should be grain refinement. In this study, grain refinement was attempted by the two-step heat treatment for the Fe-25Cr-1N(-Mn) alloy, and then the mechanical properties were investigated by means of tensile tests and fatigue tests. The two-step heat treatment resulted in the grain refinement of austenite to 20 microns in diameter. The intergranular fracture was greatly suppressed from 70% (as-solution-nitrided) to 10% (grain-refined) in area fraction by the grain refinement. In addition, elongation was markedly increased with local necking. The yield stress and tensile strength were also increased, and thus, the fatigue limit is also raised by more than 30%.

Microstructure & Phase Transformation in Rapidly Solidified V-Ga Alloys

1986 ◽  
Vol 80 ◽  
Author(s):  
M. W. Park ◽  
S. H. Whang ◽  
S. Karmarkar ◽  
D. Divecha
Keyword(s):  
Heat Treatment ◽  
Phase Transformation ◽  
Grain Refinement ◽  
Rapid Solidification ◽  
Rapid Quenching ◽  
X Ray Diffraction ◽  
X Ray ◽  
Rapidly Solidified ◽  
A15 Phase

AbstractThe A15 Phase forming V-Ga alloys were processed into ribbons and foils by rapid solidification techniques. Microstructures and phase transformation in these alloys by rapid solidification and succeeding heat treatment were investigated by x-ray diffraction and TEM. It is shown that equilibrium A15 phases can readily be suppressed by rapid quenching in these alloys. A significant grain refinement resulting from the rapid solidification also was observed. Microhardnesses of these alloys as a function of Ga concentration were determined.

scholarly journals GRAIN REFINEMENT OF CAST URANIUM BY HEAT TREATMENT

1957 ◽  
Author(s):  
G W Powell ◽  
J L Klein ◽  
D Krashes
Keyword(s):  
Heat Treatment ◽  
Grain Refinement
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