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Influence of Austempering Parameters on the Microstructure andMechanical Properties of Sintered Low Alloyed Steels

机译：奥氏体回火参数对烧结低合金钢组织和力学性能的影响

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The application of the austempering treatment facilitates the achievement of highrnstrength, good ductility and toughness because of a predominantly bainitic microstructure inrnthe sintered steel. The final strength and ductility depend upon the relative amount of therndifferent phases, ferrite, pearlite and bainite present in the austempered steel. This studyrnexplains the influence of the process parameters carrying out the austempering treatment inrndifferent environments. Astaloy CrL and Astaloy Mo were pressed to a green density of 7.3rng/cm3 and sintered at 1120 ℃ and 1250 ℃ that ensures a decrease in the open porosity.rnThe application of the austempering treatment comprises austenitizing at 860 ℃ for 2hrnfollowed by quenching in different baths at 290 ℃. The discussion is based on therncomparison of the as-sintered state and the austempered results, establishing a relationshiprnbetween mechanical properties and the phases present in the final microstructures.

机译：由于在烧结钢中主要是贝氏体组织，因此进行奥氏体化处理有助于实现高强度，良好的延展性和韧性。最终强度和延展性取决于奥氏体钢中不同相，铁素体，珠光体和贝氏体的相对含量。这项研究解释了在不同环境中进行奥氏体回火处理的工艺参数的影响。将Astaloy CrL和Astaloy Mo压至生坯密度为7.3rng / cm3，并在1120℃和1250℃下烧结，以确保降低开孔率。rn奥氏体回火处理的应用包括在860℃奥氏体化2小时，然后在不同温度下淬火。浴在290℃。讨论是基于烧结态和奥氏体化结果的比较，建立了力学性能与最终微观结构中存在的相之间的关系。

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来源
《Euro PM2007》|2007年|p.73-78|共6页
会议地点 Toulouse(FR)
作者
J.Sicre-Artalejo; J.J. Mu(n)oz; M. Campos; J.M. Torralba;
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正文语种 eng
中图分类粉末冶金（金属陶瓷工艺）;
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Influence of Austempering Parameters on the Microstructure andMechanical Properties of Sintered Low Alloyed Steels

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