EFFECT OF TEMPERATURE ON CREEP CHARACTERISTICS IN MAGNESIUM-BASED AND ALUMINUM-BASED SOLID SOLUTIONS

温度对镁基和铝基固体溶液蠕变特性的影响

• 批准号: 04650593
• 负责人: SATO Hiroyuki
• 金额: $ 1.22万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04650593/
• 关键词: DISLOCATION; MOBILE ASPECTS; CONCENTRATION EFFECTS; PRE DEFORMATION; RUPTURE LIFE; IS EFFECT; LONG-TERM STRENGTH; HIGH TEMPERATURE DEFORMATION; マグネシウム; 銅; 固溶体; 高温変形; クリープ; 延性改善; 応力急変

(i) Transient behavior by means of stress incremental tests have been investigated in copper-based and magnesium-based solid solutions and have been compared with each other. Dislocations move viscously in both alloys under deformation condition where the apparent activation energy of creep is lager than that for diffusion.(ii) Disappearance in concentration dependence in magnesium-based solid solutions has been investigated experimentally. Concentration dependence of calculated dragging force has the same trend with experimental results. It is suggested that saturation in dragging force cause disappearance in strain-rate.(iii) Effects of high-temperature pre-deformation at temperature range, where creep characteristics are different, have been investigated. Creep rupture life is improved with high-temperature pre-creep at temperature range where activation energy of creep is larger than that for diffusion. The rupture life becomes twice of that without pre-creep under optimal conditions.(iv) Effects of an interstitial element (Nitrogen) on creep characteristics of alpha-iron molybdenum and alpha-iron tungsten solid solutions have been investigated. Effects of nitrogen on creep depend on substitutional elements.(v) Creep behavior of magnesium-manganese alloys has been investigated experimentally.(vi) Effects of aluminum concentration on creep characteristics of aluminum-magnesium solid solutions have been investigated. Transient conditions of creep behavior under wide concentration ranges have been determined.

（i）已经在基于铜和镁的固体溶液中研究了通过应力增量测试进行的瞬时行为，并彼此进行了比较。在变形条件下，在两种合金中，位错移动在蠕变的明显活化能量远不及时而进行。（ii）在实验中研究了基于镁的固体溶液中浓度依赖性的消失。计算的拖动力的浓度依赖性具有相同的趋势，并具有实验结果。建议在拖动力中饱和导致应变率导致消失。（iii）已经研究了高温预染料在温度范围内的高温预染色的影响，在温度范围内，已经研究了蠕变特征不同的。蠕变破裂寿命通过在温度范围内的高温预赛前改善，在温度范围内，蠕变的激活能量大于扩散。在最佳条件下没有预培训的情况下，破裂的寿命已成为两次。（iv）间隙元件（氮）对α-铁钼和α-铁钨固体溶液的蠕变特性的影响。氮对蠕变的影响取决于替代元件。（v）已通过实验研究了镁镁合金的蠕变行为。（vi）铝浓度对铝 - 镁固体溶液的蠕变特性的影响已被研究。已经确定了在宽浓度范围内蠕变行为的瞬态条件。

项目成果

H.Sato and H.Oikawa: "Effect of Solute Concentration on Creep Characteristics of Solution Hardened Al-Mg Alloys at 600K" Aluminum Alloys, Their Physical and Mechanical Properties. 354-361 (1994)

H.Sato 和 H.Oikawa：“溶质浓度对 600K 固溶硬化铝镁合金蠕变特性的影响”铝合金及其物理和机械性能。

H.Sato,T.Motoyoshi and H.Oikawa: ""Effect of Nitrogen on High Temperature Deformation of Alpha-Iron and us Solid Solutions."" “Strength of Materials". 547-550 (1994)

H.Sato、T.Motoyoshi 和 H.Oikawa：“氮对 α-铁和我们固溶体高温变形的影响。”“材料强度”547-550 (1994)。

H.Sato,K.Masada and H.Oikawa: ""Saturation of the Solute Concentration Effect in Alloy-type Creep of Al-Mg and Mg-Al Alloys."" "Aspects of High Temperature Deformation and Fracture in Crystalline Materials. 107-114 (1993)

H.Sato，K.Masada 和 H.Oikawa：“Al-Mg 和 Mg-Al 合金合金型蠕变中溶质浓度效应的饱和。”“晶体材料高温变形和断裂的方面。107

M.Suzuki,H.Sato and H.Oikawa: "Creep Behavior of Mg-0.5mol%Mn Alloy around 600K" "Strength of Materials". 555-558 (1994)

M.Suzuki,H.Sato%20and%20H.及川:%20"蠕变%20行为%20of%20Mg-0.5mol%Mn%20合金%20around%20600K"%20"强度%20of%20材料".%20555-558

Hiroyuki Sato: "Saturation of the solute concentration Effect in Alloy type Creep of Al-Mg and Mg-Al alloys" Aspects of high temperature deformation and fracture in crystalline materials.107-114 (1993)

Hiroyuki Sato：“Al-Mg 和 Mg-Al 合金的合金类型蠕变中溶质浓度的饱和效应”结晶材料中高温变形和断裂的方面。107-114 (1993)