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properties. Among the more important of these treatments are heat treatment processes such as hardening by Quenching, Induction hardening and Case Carburizing which rely on phase transformations to produce... transformations (Machining) of low carbon steels. 关键词:Normalizing; Turn hardening; grind hardening; quality; specific energy; energy partition ratio; [全文内容正在添加中] ......
. Investigation of the age hardening and operative deformation mechanism of 7075 aluminum alloy under creep forming[J]. Materials Science and Engineering A, 2012, 552(9): 172-178. [9] ZHU A W, STARKE E...置 Fig. 1 Four-point-bend creep age forming tester 1.2 蠕变时效试验过程 将板材试样在盐浴炉中进行493 ℃保温45 min的固溶处理,淬火后分别进行1%,2%,2.5%,3%,3.5%,4%,5%,6%的预拉伸变形,无预拉伸变形试样作为参照.然后将试样装载到单曲率弯曲装置上并加载到半径1000 mm后,置于加热炉中进行......
Effect of Nano-TiO2 Addition on the Hydration and Hardening Process of Sulphoaluminate Cement马保国,李海南,MEI Junpeng,OUYANG PeiState Key Laboratory of Silicate Materials for Architectures, Wuhan... obviously promote the setting and hardening process of sulphoaluminate cement, and shorten the interval between the initial and final setting time, the hydration induction period of sulphoaluminate......
alloy; precipitation; age hardening; anisotropy; crystal growth 1 Introduction For nearly 100 years the AA2024 Al-Cu-Mg alloys have been important materials for the aerospace industry due... a composition of Al-4.57Cu-1.34Mg-0.81Mn (mass fraction, %). Prior to the hardening age, the alloy was solution heat-treated at 495 °C for 1 h and then water quenched to room temperature (20 °C......
, the corrosion sensibility of alloy decreases. Key words: 7A85 aluminum alloy; age hardening; microstructure; intergranular corrosion Foundation item: Project (51271076) supported by the National Natural......
of Materials Processing Technology, 1998, 80: 304-308. [5] LIN J, HO K C, DEAN T A. An integrated process for modelling of precipitation hardening and springback in creep age forming[J]. International... of the hardening of aluminium alloy 7055 under creep age forming conditions[J]. International Journal of Mechanical Sciences, 2011, 53: 595-605. (编辑 李艳红) 基金项目:国家重点基础研究发展计划资助项目(2010CB731700)；国家自然科学基金重点......
J. Cent. South Univ. Technol. (2010) 17: 697-702 DOI: 10.1007/s11771-010-0542-0 Effect of age condition on fatigue properties of 2E12 aluminum alloy YAN Liang(闫亮)1, 2, DU Feng-shan(杜凤山)1... fracture of 2134 type Al alloys [J]. Acta Metallurgica, 1989, 37(11): 2861-2871. [13] STARINK M J, GAO N, YAN J L. The origins of room temperature hardening of Al-Cu-Mg alloys [J]. Materials Science......
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precipitates. All the analyses show that Ca is a particularly effective trace addition in improving the age-hardening and postponing the formation of MgZn2 precipitates in Mg-8Zn-4Al alloy aged at 160 °C. Key words: Mg-8Zn-4Al-1Ca alloy; age hardening; Ca2Mg6Zn3; 1 Introduction Mg-Zn-based alloys have a remarkable age-hardening response, when typically subjected to artificial aging at temperatures above......
Trans. Nonferrous Met. Soc. China 25(2015) 1043-1049 Springback and tensile strength of 2A97 aluminum alloy during age forming Hong-ying LI, Xiao-chao LU School of Materials Science and Engineering... artificial neural network (RBFANN) methods were used to study the springback and tensile strength in age forming of 2A97 aluminum alloy based on orthogonal array. The ANOVA analysis indicates......
