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Vpliv Mn na udarno žilavost jekla

Temperatura. 0,30 % Mn. 0,39 % Mn. 1,01 % Mn. 1,55 % Mn. -100. 2. 5. 5. 15. -75. 2. 5. 7. 25. -50. 2. 12. 20. 45. -25. 10. 25. 40. 70. 0. 30. 55. 75. 110. 25. 60. 100. 110. 135. 50. 105. 125. 130. 140. 75. 130. 135. 135. 140. 100. 130. 135. 135. 140.

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Vpliv Mn na udarno žilavost jekla

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  1. Temperatura 0,30 % Mn 0,39 % Mn 1,01 % Mn 1,55 % Mn -100 2 5 5 15 -75 2 5 7 25 -50 2 12 20 45 -25 10 25 40 70 0 30 55 75 110 25 60 100 110 135 50 105 125 130 140 75 130 135 135 140 100 130 135 135 140 Vpliv Mn na udarno žilavost jekla 0,3 % Mn 1,55 % Mn 1,01 % Mn 0,39 % Mn

  2. Ugotovitev temperature prehoda žilavo/krhko Pri izračunani srednji vrednosti udarne žilavosti potegnemo horizontalno črto in poiščemo presečišče z dano krivuljo. Temperatura pri presečišču je temperatura prehoda žilavo/krhko. Temperatura prehoda žilavo-krhko se zmanjšuje z večanjem koncentracije Mn. Najprimernejše jeklo za uporabo pri temperaturi –20 °C je jeklo z 1,55 % Mn. To je jeklo, ki ima izmed teh najnižjo temperaturo prehoda žilavo-krhko.

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