Search
Close this search box.

NEWS

China stainless steel factory

Is it true that fine-grained steel has high strength, good plasticity, and toughness?

  1. Reasons for grain refinement:

After grain refinement in steel, there is an increase in the number of grain boundaries, which have irregular atomic arrangements, higher impurity and defect concentrations, and higher energy levels. This impedes the movement of dislocations, thus hindering plastic deformation and achieving high strength.

  1. Reasons for good plasticity and toughness:

The finer the grain size, the greater the number of grains within a given volume. Consequently, under the same amount of plastic deformation, the deformation is dispersed among a larger number of grains, resulting in more uniform deformation. Additionally, each grain contains fewer accumulated dislocations, reducing the chances of cracking caused by stress concentration. This allows the material to withstand larger amounts of deformation before fracture, exhibiting higher plasticity. In fine-grained metals, crack initiation (due to reduced stress concentration) is less likely, and crack propagation is hindered by the tortuous grain boundaries. As a result, more energy is absorbed during the fracture process, leading to higher toughness.

New Center

More Posts

Stronger Dollar and Profit-Taking Pressure

The combined pressure of a stronger dollar and profit-taking caused London copper to end a seven-day winning streak last week, closing down 0.56%. High copper prices are suppressing downstream demand, while market uncertainty surrounding upcoming holidays intensifies, making price trends difficult to predict. Spot copper is likely to decline today. With the strengthening of the

The Golden Age of Mining Giants

Australia’s mining industry is massive, with a long history and a profound impact on global markets. Approximately 1.2 million people are employed in this industry, with annual exports reaching AUD 160 billion. BHP and Rio Tinto are leaders in this field, focusing on the extraction and processing of minerals such as coal, iron ore, and

Aluminum Prices Continue to Rise Amidst a Quiet Trading Atmosphere

Today, LME aluminum prices trended downward, with the 3-month contract quoted at $2,526/ton at 15:01 Beijing time, down by $20/ton from the previous trading day’s settlement price, a decrease of 0.81%. The SHFE aluminum main 2410 contract opened at RMB 19,950/ton, reaching an intraday high of RMB 20,045/ton and a low of RMB 19,895/ton. It

Send Us A Message

CONTACT US

Let's have a chat