scholarly journals An Experimental Study of TRIP Behavior in a Cr-Ni-Mo-Al-Ti Maraging Steel. Identification of Back Stress and Transformation Condition.

2001 ◽  
Vol 50 (3) ◽  
pp. 243-248
Author(s):  
Kiyokazu NAGAYAMA ◽  
Takaki TERASAKI ◽  
Fumi ISHII ◽  
Kikuaki TANAKA ◽  
F.D. Fischer ◽  
...  
Keyword(s):  
Experimental Study ◽  
Maraging Steel ◽  
Back Stress ◽  
Transformation Condition

scholarly journals An Experimental Study of TRIP Behavior in a Cr-Ni-Mo-Al-Ti Maraging Steel. Evolution of TRIP Strain and Back Stress.

2001 ◽  
Vol 50 (8) ◽  
pp. 908-913
Author(s):  
Kiyokazu NAGAYAMA ◽  
Takaki TERASAKI ◽  
Kikuaki TANAKA ◽  
F.D. FISCHER ◽  
G. CAILLETAUD
Keyword(s):  
Experimental Study ◽  
Maraging Steel ◽  
Back Stress

Transformation Induced Plasticity in Maraging Steel: An Experimental Study

2000 ◽  
Vol 177-180 ◽  
pp. 443-448 ◽  
Author(s):  
K. Nagayama ◽  
Y. Kitajima ◽  
S. Kigami ◽  
Kenji Tanaka ◽  
Franz Dieter Fischer ◽  
...  
Keyword(s):  
Experimental Study ◽  
Maraging Steel ◽  
Transformation Induced Plasticity

scholarly journals An Experimental Study of TRIP Behavior in a Cr-Ni-Mo-Al-Ti Maraging Steel. Quantitative Identification of Backstress Evolution and Iso-Volume Fraction Lines.

2002 ◽  
Vol 51 (3) ◽  
pp. 255-260
Author(s):  
Kiyokazu NAGAYAMA ◽  
Shinnosuke GOTO ◽  
Takaki TERASAKI ◽  
Kikuaki TANAKA ◽  
F. D. FISCHER ◽  
...  
Keyword(s):  
Experimental Study ◽  
Maraging Steel ◽  
Volume Fraction ◽  
Quantitative Identification

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

Microstructure of resistance spot welding of maraging steels

1990 ◽  
Vol 48 (4) ◽  
pp. 900-901
Author(s):  
I. Neuman ◽  
S.F. Dirnfeld ◽  
I. Minkoff
Keyword(s):  
Maraging Steel ◽  
Spot Welding ◽  
Lath Martensite ◽  
Base Material ◽  
Aging Treatment ◽  
High Strength ◽  
Maraging Steels ◽  
Heat Treated ◽  
Current Cycle ◽  
Welding Processes

Experimental work on the spot welding of Maraging Steels revealed a surprisingly low level of strength - both in the as welded and in aged conditions. This appeared unusual since in the welding of these materials by other welding processes (TIG,MIG) the strength level is almost that of the base material. The maraging steel C250 investigated had the composition: 18wt%Ni, 8wt%Co, 5wt%Mo and additions of Al and Ti. It has a nominal tensile strength of 250 KSI. The heat treated structure of maraging steel is lath martensite the final high strength is reached by aging treatment at 485°C for 3-4 hours. During the aging process precipitation takes place of Ni3Mo and Ni3Ti and an ordered solid solution containing Co is formed.Three types of spot welding cycles were investigated: multi-pulse current cycle, bi-pulse cycle and single pulsle cycle. TIG welded samples were also tested for comparison.The microstructure investigations were carried out by SEM and EDS as well as by fractography. For multicycle spot welded maraging C250 (without aging), the dendrites start from the fusion line towards the nugget centre with an epitaxial growth region of various widths, as seen in Figure 1.

An Experimental Study of Some Properties of Stuttered Words

1962 ◽  
Vol 5 (4) ◽  
pp. 387-394 ◽  
Author(s):  
Bruce Quarrington ◽  
Jerome Conway ◽  
Nathan Siegel
Keyword(s):  
Experimental Study
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