热处理制度对Fe-28Al-5Cr-0.3B-0.003Mg合金 显微组织和室温力学性能及断裂机理的影响
来源期刊：中国有色金属学报1996年第2期
论文作者：邢志强 陆永浩 张学昆 徐学东 周美玲
文章页码：70 - 74
关键词：Fe3Al金属间化合物 力学性质 断裂机理
Key words：Fe3Al ； metallic composite ； mechanical behaviour； fracture mechanism
摘 要：研究了在小同相区保温和控制冷却速率的Fe-28Al-5Cr-0.3B-0.003Mg合金的微观组织和室温拉伸性能发现热机械处理可提高该材料的强韧性，而未再结晶并具有B2结构的试样的综合拉伸性能最佳；微观组织、断裂特征和强韧性能之间存在内在联系。
Abstract: Themicro -structuresandthetensilepropertiesatroomtemperatureofthe Fe -2 8 Al -5 Cr -0.3B -0.003Mg alloy have been examined with various holding temperatures in several phase zones and at different cooling rates. It was found that, thermally mechanical treatments can improve the alloy s strength and toughness and the comprehensive-tensile behaviours of the samples withB2 structure and with no re-crystallization structure possess optimum tensile behaviours. In addition there is an intrinsical relationship existing between microstructure，fracture characteristics, strength and toughness of the alloy tested.
