Computer aided design of PM high speed steels for vacuum and nitrogen atmospheres
Computer aided design of PM high speed steels for vacuum and nitrogen atmospheres
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真空和氮气气氛用粉末冶金高速钢的计算机辅助设计
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
Í. Iturriza
中科院分区：
文献类型：
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作者：
S. Giménez;Í. Iturriza
计算机辅助合金设计已被用于开发新的高烧结性合金，以满足粉末冶金高速钢的耐用加工要求。三种合金（M35 IG，AR-K2和M42 HVIG）已被设计，并随后分析了预期的烧结行为，气氛相互作用和微观结构特征。在90 N2 + 9 H2 + 1CH 4气氛下，真空烧结的M35 IG合金的预测最佳烧结温度为1200°C，AR-K2和M42 HVIG合金的预测最佳烧结温度为1150°C。另一方面，所有合金的预期烧结窗口都超过10°C，并且对微小成分变化的敏感性已被最小化，从而保证了稳健的加工要求。此外，1150°C的烧结温度允许在连续带式炉中加工，对工业环境具有固有的兴趣。采用Thermo-Calc软件和TC-Fe 2000数据库对多组分体系进行了计算。
Computer aided alloy design has been used to develop new highly sinterable alloys in order to fulfil the requirements for robust processing of powder metallurgy high speed steels. Three alloys (M35IG, AR-K2 and M42HVIG) have been designed and subsequently analysed in terms of the expected sintering behaviour, atmosphere interaction and microstructural features. Predicted optimum sintering temperatures are 1200°C for the vacuum sintered M35IG alloy and 1150°C for the AR-K2 and M42HVIG alloys sintered under a 90N2+9H2+ 1CH4 atmosphere. On the other hand, the expected sintering windows exceed 10°C for all the alloys and the sensitivity to small compositional changes has been minimised guaranteeing the robust processing requirements. Additionally, sintering temperatures of 1150°C allow processing in continuous belt furnaces with the inherent interest for the industrial environment. Thermo-Calc software and the TC-Fe2000 database have been used to obtain the different calculations on the multicomponent systems.