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Effect of thermal exposure on the microstructure and creep properties of a fourth-generation Ni-based single crystal superalloyYeshun Huang1,2,Xinguang Wang1,Chuanyong Cui1,Zihao Tan1,Jinguo...摘 要:The effect of thermal exposure on microstructure and creep properties of a fourth-generation nickelbased single crystal superalloy was investigated.The......
; 文章编号:1672-7207(2012)08-3250-07 Thermal creep strain of hydration heat on concrete box girder QIN Yu1, LIU Lai-jun1, ZHANG Liu-yu1, TIE Ming-liang2 (1. School of Highway, Chang’an University... the temperature strain of hydration heat on prefabricated concrete box girder. The numerical model of elastic creep theory with implicit method about temperature strain of hydration heat......
出形态和分布,使析出相分布均匀；预处理试样的电导率比未预处理试样的电导率高,其硬度和强度也较高,但伸长率较低. 关键词:蠕变时效；预处理；微结构；力学性能 中图分类号:TG146.2 文献标志码:A Microstructure and properties of creep aged 2124 aluminum alloy DENG... Materials Science and Engineering, Ministry of Education, Central South University, Changsha 410012, China) Abstract:The effect of pre-treatment(15% pre-deformation +100 ℃ pre-aging for 5 h)on creep age......
Trans. Nonferrous Met. Soc. China 30(2020) 2599-2612 Creep aging behavior of retrogression and re-aged 7150 aluminum alloy Qing WANG1,2, Li-hua ZHAN1,2,3, Yong-qian XU1,2,3, Chun-hui LIU 1,2,Xing... May 2020 Abstract: Creep aging behavior of retrogression and re-aged (RRAed) 7150 aluminum alloy (AA7150) was systematically investigated using the creep aging experiments, mechanical properties tests......
析出会使得α基体贫Si,减弱了Si原子气团对位错攀移的阻碍作用,从而导致蠕变抗力的下降.TG6钛合金在600 ℃,200 MPa下的稳态蠕变变形主要受位错攀移机制的控制. 关键词:高温钛合金；蠕变行为；位错攀移 中图分类号:TG146 文献标志码:A Effect of microstructure on creep deformation... Aviation Forging Co., Ltd., Anshun 561005, China) Abstract: The creep behaviors of three microstructures of TG6 titanium alloy disc forgings at 600 ℃ were studied. Under the condition of 600 ℃ and 200......
Technology, Tianjin University, Tianjin 300072, China Received 26 May 2014; accepted 20 October 2014 Abstract: Interfacial reaction, tensile strength and creep resistance of Sn-58Bi-xZn (x=0, 0.7, mass... to the fracture surface which was changed from the Cu/IMC interface to the IMC/solder interface due to the finer Bi grain. Nanoindentation results revealed that the creep behavior of Sn-58Bi-0.7Zn solder......
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.基于Heard蠕变模型,采用Origin分析软件对图3中不同条件下的稳态蠕变率进行非线性拟合,得到的参数,和见表1. 图 3 盐岩室内试验蠕变曲线 Fig. 3 Creep curves of salt rock 表1 拟合得到的Heard模型蠕变参数 Table 1 Creep parameters of fitted Heard model 1.3 NGKH模型的构建 王军保等[18]基于...着减小,衰减蠕变阶段的蠕变速率衰减速度同样加快,进入稳态蠕变阶段的时间同样提前,但此后各蠕变曲线近似平行,轴向应变呈近似线性减小.从图5(b)可知:的变化主要影响稳态蠕变阶段的曲线形态,对衰减蠕变阶段则影响很小.随着增大,稳态蠕变率明显增大,轴向应变也明显增大.蠕变参数对蠕变曲线的影响规律与的影响规律相似. 图4 NGKH蠕变模型 Fig. 4 NGKH creep model 图5 蠕变参数......
:Carbon and boron have been considered to strengthen grain boundaries that might form during single crystal casting.In this study the effect of boron on solidification behavior and creep properties... were examined with solidification rate.The relationship between microstructural evolution and creep properties of the carbon and boron modified single crystal has been also investigated. Key words......
