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AUSTENITIC WEAR RESISTANT STEEL HAVING SUPERIOR TOUGHNESS IN WELD HEAT-AFFECTED ZONE AND MACHINABILITY
AUSTENITIC WEAR RESISTANT STEEL HAVING SUPERIOR TOUGHNESS IN WELD HEAT-AFFECTED ZONE AND MACHINABILITY
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机译：在焊接热影响区具有优异韧性的奥氏体耐磨钢和可加工性
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摘要
Provided are a wear resistant austenitic steel having superior machinability and toughness in welding heat affected portion thereof and a method for producing same. The austenitic steel comprises, in weight %, 15 to 25% of manganese (Mn), 0.8 to 1.8% of carbon (C), copper (Cu) that satisfies 0.7C-0.56 (%) = Cu = 5%, 0.03 to 0.1% of sulfur (S), 0.001 to 0.01% of calcium (Ca), and remaining amount of Fe and other inevitable impurities. The Charpy impact value of the welding heat affected portion of the austenitic steel at -40C is 100 J or higher. According to the present invention, provided is austenitic steel having superior machinability by suppressing carbide generation in the welding heat affected portion after welding, thus preventing the toughness of the welding heat affected portion from being degraded, and by improving corrosion resistance, thus enabling the steel to be used over a long period of time in a corrosive environment.
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机译：本发明提供一种在焊接热影响部具有优异的切削性和韧性的耐磨性奥氏体钢及其制造方法。奥氏体钢的重量百分比为：锰（Mn）的15％至25％，碳（C）的0.8％至1.8％，满足0.7C-0.56（％）<= Cu <= 5％的铜（Cu），硫（S）为0.03至0.1％，钙（Ca）为0.001至0.01％，以及Fe和其他不可避免的杂质的残留量。奥氏体钢的焊接热影响部在-40℃下的夏比冲击值为100J以上。根据本发明，可以提供一种可加工性优异的奥氏体钢，其通过抑制焊接后的焊接热影响部中的碳化物的生成，从而可以防止焊接热影响部的韧性降低，并且可以提高耐腐蚀性，从而可以制造。可以在腐蚀性环境中长时间使用。
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