The present work, likewise, deals with grain refinement of medium carbon steel containing 0.45 wt pct carbon. The structure refinement was conducted in two steps. Preliminary refinement has been achieved due to multistep open die forging process which provided total strain of 3-4. Uniform and ...
The corrosion resistance of constructional carbon steel 20 and 45 with large-grain and ultrafinegrain structure is assessed in tests corresponding to State Standard GOST 9.308-85. Distinctive features are observed in the corrosion resistance of constructional carbon steel with ultrafine-grain structure. ...
Metallographic data show that ultrafine-grain structure may be formed in carbon-steel wire. Mechanical tests confirm that the properties of carbon-steel wire may be improved by such deformational treatment.关键词: carbon-steel wire continuous deformation ultrafine-grain structure mechanical properties ...
EN 10210-1 - 2006Hot finished structural hollow sections of non-alloy and fine grain steels - Technical delivery requirements 22[ISO] ISO 3304 - 1985Plain end seamless precision steel tubes - Technical conditions for delivery 23[EN] EN 10295 - 2002Heat resistant steel castings ...
A 0.4C-2Si-1Cr-1Mo steel with an ultrafine elongated grain (UFEG) structure and an ultrafine equiaxed grain (UFG) structure was fabricated by multipass cal... T Inoue,Y Kimura,S Ochiai - 《Sci Technol Adv Mater》 被引量: 13发表: 2012年 Strength and impact toughness of low-carbon ste...
Grain Structure of Aluminum-Killed, Low Carbon Steel SheetsJOM -doi:10.1007/BF03397382R. L. SolterC. W. BeattieSpringer USJOMSolter, R.L., and Beattie, C.W., Grain Structure of Aluminum-Killed Low-Carbon Steel Sheets, AIME Trans., vol. 191, (1951), 721-726....
If we cool a steel of eutectoid composition (0.80 wt% C) below 723 °C pearlite nodules nucleate at grain boundaries (Figure 12.3) and the microstructure transforms to pearlite. If the steel contains less than 0.80% C (a hypoeutectoid steel), then the γ starts to transform as soon as ...
Simple cold-rolling and annealing of martensite starting structure can produce ultrafine grained structure in carbon steel. The microstructural evolution during the process was studied in a 0.13%C steel. The ultrafine lamellar dislocation cells (LDCs) with mean thickness of 60 nm were mainly observed...
The pipe is not fully normalized after welding, thus producing a heat-affected zone on each side of the weld that results in nonuniformity of hardness and grain structure, thus making the pipe more susceptible to corrosion. Therefore, ERW pipe is not as desirable as SMLS pipe for handling ...
The grain silos in Chengdu have applied a combined structure of inflatable membranes, steel and concrete. Inflatable silos are comparable to conventional ones in construction, but boast nearly 30 percent energy savings in operation, according to developer China Grain Reserves Group (SINOGRAIN). ...