Destabilization of retained austenite during multiple tempering of high-speed W-Mo-V steel
Апстракт
Constant demands for quality improvement of high-speed steels have contributed to the prolonged importance of tests, such as test in structural changes and properties derived from the applied heat treatment. Generally, tools from high-speed steel are treated by multiple tempering after quenching in order to reduce amount of retained austenite and value of internal stresses to the lowest level. A review of literature shows that processes taking place during the first tempering have been studied comprehensively and in great detail while very little attention has been paid to testing structural changes in the succeeding tempering cycles. Having this in mind, the differential dilatometric method has been used to test the influences of quenching temperature (1170-1230°C), tempering temperature (540-605°C), and the number (1 to 5) and tempering time, on the process of destabilization of retained austenite at circumstances of multiple continuous tempering of quenched W-Mo-V high-speed steel. ...The acquired results have contributed to the conviction that the customary regime of tempering for this type of high-speed steel could be rationally modified. We emphasize that the change in tendency of the dilatometric cooling curve in the austenitic-martensitic transformation region is the result of self-tempering of secondary martensite. The explanation proposed in literature for this dilatometric effect is from our point of view totally incorrect.
Извор:
11th International Conference on Fracture 2005, ICF11, 2005, 5, 3914-3919Scopus: 2-s2.0-84869832997
Колекције
Институција/група
Mašinski fakultetTY - CONF AU - Anđelić, Biljana AU - Zeravčić-Šijački, Vera AU - Đukić, Miloš AU - Bakić, Gordana PY - 2005 UR - https://machinery.mas.bg.ac.rs/handle/123456789/468 AB - Constant demands for quality improvement of high-speed steels have contributed to the prolonged importance of tests, such as test in structural changes and properties derived from the applied heat treatment. Generally, tools from high-speed steel are treated by multiple tempering after quenching in order to reduce amount of retained austenite and value of internal stresses to the lowest level. A review of literature shows that processes taking place during the first tempering have been studied comprehensively and in great detail while very little attention has been paid to testing structural changes in the succeeding tempering cycles. Having this in mind, the differential dilatometric method has been used to test the influences of quenching temperature (1170-1230°C), tempering temperature (540-605°C), and the number (1 to 5) and tempering time, on the process of destabilization of retained austenite at circumstances of multiple continuous tempering of quenched W-Mo-V high-speed steel. The acquired results have contributed to the conviction that the customary regime of tempering for this type of high-speed steel could be rationally modified. We emphasize that the change in tendency of the dilatometric cooling curve in the austenitic-martensitic transformation region is the result of self-tempering of secondary martensite. The explanation proposed in literature for this dilatometric effect is from our point of view totally incorrect. C3 - 11th International Conference on Fracture 2005, ICF11 T1 - Destabilization of retained austenite during multiple tempering of high-speed W-Mo-V steel EP - 3919 SP - 3914 VL - 5 UR - https://hdl.handle.net/21.15107/rcub_machinery_468 ER -
@conference{ author = "Anđelić, Biljana and Zeravčić-Šijački, Vera and Đukić, Miloš and Bakić, Gordana", year = "2005", abstract = "Constant demands for quality improvement of high-speed steels have contributed to the prolonged importance of tests, such as test in structural changes and properties derived from the applied heat treatment. Generally, tools from high-speed steel are treated by multiple tempering after quenching in order to reduce amount of retained austenite and value of internal stresses to the lowest level. A review of literature shows that processes taking place during the first tempering have been studied comprehensively and in great detail while very little attention has been paid to testing structural changes in the succeeding tempering cycles. Having this in mind, the differential dilatometric method has been used to test the influences of quenching temperature (1170-1230°C), tempering temperature (540-605°C), and the number (1 to 5) and tempering time, on the process of destabilization of retained austenite at circumstances of multiple continuous tempering of quenched W-Mo-V high-speed steel. The acquired results have contributed to the conviction that the customary regime of tempering for this type of high-speed steel could be rationally modified. We emphasize that the change in tendency of the dilatometric cooling curve in the austenitic-martensitic transformation region is the result of self-tempering of secondary martensite. The explanation proposed in literature for this dilatometric effect is from our point of view totally incorrect.", journal = "11th International Conference on Fracture 2005, ICF11", title = "Destabilization of retained austenite during multiple tempering of high-speed W-Mo-V steel", pages = "3919-3914", volume = "5", url = "https://hdl.handle.net/21.15107/rcub_machinery_468" }
Anđelić, B., Zeravčić-Šijački, V., Đukić, M.,& Bakić, G.. (2005). Destabilization of retained austenite during multiple tempering of high-speed W-Mo-V steel. in 11th International Conference on Fracture 2005, ICF11, 5, 3914-3919. https://hdl.handle.net/21.15107/rcub_machinery_468
Anđelić B, Zeravčić-Šijački V, Đukić M, Bakić G. Destabilization of retained austenite during multiple tempering of high-speed W-Mo-V steel. in 11th International Conference on Fracture 2005, ICF11. 2005;5:3914-3919. https://hdl.handle.net/21.15107/rcub_machinery_468 .
Anđelić, Biljana, Zeravčić-Šijački, Vera, Đukić, Miloš, Bakić, Gordana, "Destabilization of retained austenite during multiple tempering of high-speed W-Mo-V steel" in 11th International Conference on Fracture 2005, ICF11, 5 (2005):3914-3919, https://hdl.handle.net/21.15107/rcub_machinery_468 .