Effect of Cu. ni. Mn and,mo on the austemperability, Inicroslruclures and Inechanlcal properlies of auslempered duclile iron(ADI) weld metal have been investigated it has been demonslrated foal Mn and.Mo obviously enh...Effect of Cu. ni. Mn and,mo on the austemperability, Inicroslruclures and Inechanlcal properlies of auslempered duclile iron(ADI) weld metal have been investigated it has been demonslrated foal Mn and.Mo obviously enhance the austemperablity of weld metal. but a exdcess of Mn or Mo impairs the mechanical properties of ADI weld metal because of the formation or carbide at cell boundaries. Cu and Ni can improve the plasticity of ADI weld metal by suppressing the formation of carbide and by increaxsing the amount of austemite,.in order to obtain the weld having both the high austemperability and exceptional combination of mechanical properties. it is advantageous that welds is alloyed withe tWo Or more elements in relalivelv.small amounts.展开更多
Austempered ductile iron(ADI) parts have a unique combination of high strength and toughness with excellent design flexibility and low cost. These excellent properties are directly related to its microstructure called...Austempered ductile iron(ADI) parts have a unique combination of high strength and toughness with excellent design flexibility and low cost. These excellent properties are directly related to its microstructure called "ausferrite" that is the result of austempering heat treatment applied to ductile irons. Alloying elements increase ADI austemperability and change speeds of austempering reactions. Thus, they can affect ADI resultant microstructure and mechanical properties. In this paper, the effects of alloying elements on ADI mechanical properties, microstructural changes, two-stage austempering reactions, processing windows, austemperability, and other aspects are reviewed.展开更多
文摘Effect of Cu. ni. Mn and,mo on the austemperability, Inicroslruclures and Inechanlcal properlies of auslempered duclile iron(ADI) weld metal have been investigated it has been demonslrated foal Mn and.Mo obviously enhance the austemperablity of weld metal. but a exdcess of Mn or Mo impairs the mechanical properties of ADI weld metal because of the formation or carbide at cell boundaries. Cu and Ni can improve the plasticity of ADI weld metal by suppressing the formation of carbide and by increaxsing the amount of austemite,.in order to obtain the weld having both the high austemperability and exceptional combination of mechanical properties. it is advantageous that welds is alloyed withe tWo Or more elements in relalivelv.small amounts.
文摘Austempered ductile iron(ADI) parts have a unique combination of high strength and toughness with excellent design flexibility and low cost. These excellent properties are directly related to its microstructure called "ausferrite" that is the result of austempering heat treatment applied to ductile irons. Alloying elements increase ADI austemperability and change speeds of austempering reactions. Thus, they can affect ADI resultant microstructure and mechanical properties. In this paper, the effects of alloying elements on ADI mechanical properties, microstructural changes, two-stage austempering reactions, processing windows, austemperability, and other aspects are reviewed.
