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of Al-Mg alloys[J]. Rare Metal Materials and Engineering, 2010, 39(4): 719-722. [5] AVTOKRATOVA E, SITDIKOV O, MARKUSHEV M, MULYUKOV R. Extraordinary high-strain rate superplasticity of severely deformed Al-Mg-Sc-Zr alloy[J]. Materials Science and Engineering A, 2012, 538: 386–390. [6] MUSIN F, KAIBYSHEV R, MOTOHASHI Y. High strain rate superplasticity in a commercial Al-Mg-Sc alloy[J]. Scripta......
;网篮组织;超塑性;二次硬化;动态再结晶 中图分类号:TG146.2+3 文献标识码: A Superplasticity of in-situ synthesized (TiB+TiC)/7715D titanium matrix composite LI Li1, L? Wei-jie1, LU Jun-qiang1... basket-weave structure, its mechanical properties under room-temperature and high-temperature are both improved, and its superplasticity is also good, with maximum elongation of 625% at 3×10-4 s-1......
;°C and 1×10-3 s-1; industrially relevant elongation was achieved at 1×10-2 s-1 at both 450 °C (195%) and 400 °C (170%). Key words: magnesium; superplastic forming; superplasticity..., LANGDON T G. Superplasticity in advanced materials [J]. Materials Science and Engineering R, 1993, 10(6): 237-274. [6] TAN J C, TAN M J. Superplasticity and grain boundary sliding characteristics......
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of hysteresis loops decrease with increasing the applied stresses. The lower the applied stress is, the higher the strain rate sensitivity exponent m is. Superplasticity behavior also occurs... temperature during the heating of cycling. Key words: Mg based composites; Mg2B2O5 whisker; thermal cycling; superplasticity; strain rate 基金项目:国家重点基础研究发展计划资助(2011CB612200);国家科技部国际科技合作计划项目( 2009DFA51830 ) 收......
中图分类号:TG 146;TG 113 文献标识码:A Superplasticity, microstructural evolution and deformation mechanism of super-light two-phase Mg-Li alloys CAO Fu-rong, DING Hua, LI... of Mg-7.83%Li alloy and Mg-8.42%Li alloy were prepared by melting and casting, heavy rolling (reduction more than 92%) and nitrate bath annealing method, and their superplasticity, microstructure......
浅析粉末冶金材料及冶金技术发展段家欢商洛学院化学工程与现代材料学院摘 要:现今,粉末冶金技术已经被推广到各个领域,粉末冶金技术和传统方法相比有诸多优点,比如节能,高效,环保等等.同时,粉末冶金也可以用于制作传统方法无法制备的材料.本文首先介绍了粉末冶金的特点,种类,用途.其次,阐述了粉末冶金的发展历史.最后,讲述了粉末冶金技术的发展现状.本文着重探讨粉末冶金材料及冶金技术发展.关键词:粉末冶金材料;冶金技术发展;效率;节能;......
of microcrack and improving the service life of the forming parts. Key words: high temperature deformation; superplasticity; creep; deformation energy; Mg-Li-Al-Y alloy 1 Introduction High temperature deformations such as superplasticity and creep have attracted the attention of researchers in the past [1,2], and limited energy analyses have been recorded. GITTUS [3] obtained the theoretical free......
不锈钢冶金技术的进展 秦丽柏1,张存信1,刘国忠1,孙红2,田华1 (1.中国兵器科学院,宁波分院,内蒙古包头,014034;2.宁波大榭开发区建设工程检测中心,浙江,宁波,315812) 摘要:概述不锈钢产业的发展现状,重点介绍不锈钢AOD精炼中脱碳和脱硫工艺的改进,提高供氧强度和顶枪技术的发展和延长炉衬寿命的方法,以及三步法冶炼不锈钢的研究进展,并根据我国资源状况和产业特点.提出重点进行200系列和400系列不锈钢的开发和应用. 关键词:不锈钢; AOD工艺; 综述; 精炼技术; 材料技术; 研究进展; stainless steel; AOD process; smelting ......