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the formation of excess Si particles. Key words: Al-Cu alloys; iron-rich intermetallics; Si; tensile properties 1 Introduction With the increasing requirements for environmental protection and green... the detrimental effects of iron in aluminum alloys. These methods include (1) reducing the formation of Fe-rich intermetallics by lowering the Fe levels to be as low as economically possible, and (2......
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alloys, which attribute to the increase of volume fraction of needle-like iron-rich intermetallics and the decrease of volume fraction of precipitation particles in α(Al) matrix. The heat-resistant iron-rich intermetallics phases around the grain boundary can prevent the sliding of grain boundary at elevated temperature. As a result, the effect of Fe content on elevated-temperature mechanical......
Glass ceramic of high hardness and fracture toughness developed from iron-rich wastes Weixin HAN1 (1.Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China) Abstract:A study has been carried out on the feasibility of using high iron content wastes, gen-erated during steel making, as a raw material for the production of glass ceramic. The iron-rich wastes were mixed......
中富铁相含量与Mn含量的关系 Fig. 11 Relationship between mass fraction of iron-rich phase and Mn content in Al-Si alloy 图11所示为铝硅合金中τ6-Al9Fe2Si2和τ5-Al8(Fe, Mn)2Si相与合金中Mn添加量的关系.从图11中可以看出,在未添加Mn时,富铁相含量约占合金总质量的... Integrity, 2016, 2: 2238-2245. [6] BIDMESHKI C, ABOUEI V, SAGHAFIAN H. Effect of Mn addition on Fe-rich intermetallics morphology and dry sliding wear investigation of hypereutectic Al-17.5%Si alloys[J......
of the melt holding temperature on the morphological evolution and sedimentation behavior of iron-rich intermetallics in Al-7.0Si-1.0Fe-1.2Mn-0.25Mg alloy was investigated using an optical microscope...; sedimentation behaviour 1 Introduction Iron (Fe) is one of the common impurity elements of Al-Si system alloys. Since it forms iron-rich intermetallics with high brittleness and hardness, Fe is usually......
) Abstract: The control of the shape of iron-rich phase were realized by adding manganese in melt of Al-Si alloy and pre-heat treatment. The results show that the needle-like iron phase can mostly... and elongation of Al-Si alloy are improved by 40~80MPa and 6%~7%, respectively. Key words: iron-rich phase; pre-heat treatment; impurity; grain size; mechanical property 铁可以作为基体增强相提高铝合金高温短时抗拉强度, 蠕......
, CAO X, CHEN X G. Formation and phase selection of iron-rich intermetallics in Al-4.6Cu-0.5Fe cast alloy[J]. Metallurgical and Materials Transaction A, 2013, 44(2): 682-695. [8] SALEM S, STEN J... of Al-7Si-0.3Mg-0.8Fe alloy[J]. Materials Science and Engineering A, 2007, 460/461: 561-573. [11] LIU K, CAO X, CHEN X G. Effect of Mn, Si, and cooling rate on the formation of iron-rich intermetallics in 206 Al-Cu cast......
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of precipitation strengthening and grain boundary strengthening due to thermally stable intermetallic phases as well as suitable grain size. Key words: Al-Si alloys; iron-rich intermetallics; semi... intermetallic phase. However, some large block-shaped iron-rich intermetallics, called sludge, were found in the squeeze cast samples. The sludge consists of the primary iron-rich intermetallics, which......