Microstructure and mechanical properties of austempered ductile iron with different strength grades
Microstructure and mechanical properties of austempered ductile iron with different strength grades
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不同强度等级等温淬火球墨铸铁的显微组织与力学性能
DOI：
10.1016/j.matlet.2013.12.086
复制
发表时间：
2014-03
影响因子：
3
通讯作者：
Song, Qingpeng
中科院分区：
文献类型：
--
作者：
Zhang, Mintang;Lu, Liantao;Zeng, Dongfang;Song, Qingpeng
Austempered ductile irons (ADIs) with three strength grades were produced successfully by different two-stage heat treatments. The microstructure and mechanical properties of ADIs such as tensile strength, yield strength, elongation and impact toughness were studied. The results show that the strengths of the three grades ADIs well satisfy the requirement of ASTM standard 897M-06 grade 900/650/09, grade 1050/750/07 and grade 1200/850/04. Meanwhile, the ductile and impact toughness of the ADIs are larger than those required by the ASTM standard. The microstructure has obvious influence on mechanical properties and fracture behavior. With the decrease of austempering temperature, yield strength and tensile strength of the ADIs increase, while both the impact energy and elongation of them decrease.
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