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strength of234.7 MPa and a yield strength of 146.5 MPa. Plasticity is also improved with a low concentration of Ni. Mg-11.3Al-2Ni alloy possesses a compression ratio of 17.3%. The phases of Al3Ni2 and Al... to the improvement in plasticity. Finally, the formation mechanism of Al-Ni phases in the process is discussed with thermodynamics and kinetics.关键词:......
) was prepared by melting a preform of alternate stack-up foils in the high vacuum atmosphere. The composite demonstrates a good combination of yield strength(1618 MPa), plasticity(4.3%) and specific fracture.... Such a multilayer structure effectively inhibits the propagation of shear band, leading to the enhanced plasticity. Those extraordinary properities suggest that combining ductile lamella with brittle......
effects and the plasticity behaviors in nanocrystalline metals are discussed as a basis for comparison with the plasticity in bulk materials. In the last part, we show the atomic-scale and time......
="ChDivSummary" name="ChDivSummary">The effect of nitrogen on microstructural evolution and tensile properties of transformation-induced plasticity(TRIP) Fe50 Mn30 Co10 Cr10 HEAs was investigated. Nitrogen was fully introduced in solid solution by pressure-induced melting technique. Nitrogen addition turned the TRIP alloy to a twinning-induced plasticity(TWIP) alloy, and simultaneously improved the strength......
Mechanical Properties, Purifying Techniques and Processing Methods of Metal Yttrium Jin Hong1,Sun Guoqiang1 (1.Beijing Research Institute of Mechanical and Electrical Technology, Beijing 100083, China) Abstract:The mechanical properties of metal yttrium such as strength, plasticity, hardness and elasticity were introduced. The purifying techniques of yttrium were discussed in detail......
不同应变率下 TRlP钢的拉伸性能 符仁钰1,史文1,韦习成1,李麟1 (1.上海大学材料科学与工程学院,200072) 摘要:在自制气动式间接杆杆型冲击拉伸试验机上对含1.6Si-1.58Mn-0.195C的TRIP(Transformation-induced Plasticity)钢在不同应变率下的高速冲击拉伸性能进行了研究,并和静态拉伸性能进行了比较.结果显示,随应变速率的提高,材料的抗拉强度显著增加,延伸率降低.由于TRIP钢组织中残余奥氏体在应力应变作用下向马氏体的相变诱发转变显著改善了材料的塑性,因此在高应变率下的延伸率仍较好. 关键词:TRIP钢相变诱发塑性; 高应变率; 冲击拉伸; [全文内容正在添加中] ......
亚稳β型TRIP/TWIP钛合金研究进展张金勇1,2,陈冠方1,张帅1,赵聪聪1,陈正1,2,沈宝龙11. 中国矿业大学2. 江苏省高效储能技术与装备工程实验室摘 要:综述了当前国内外学者关于具有相变诱发塑性/孪晶诱发塑性(transformation induced plasticity/twinning induced plasticity,TWIP/TRIP)效应的亚稳β型钛合金的研究进展.介绍了该类钛合金的设计方法.统计了近几年开发的TWIP/TRIP钛合金家族成员及其力学性能,归纳了合金在塑性变形过程中的变形产物及其形成机制,指出了该类钛合金在发展过程中遇到的一些问题.关键词:亚稳β钛合金;TRIP/TWIP效应;合金设计;力学性能;变形机理;......
temperature. It was shown that the strength of the steels increases while the plasticity and toughness decrease as temperature drops. In the transitional area the toughness drops rapidly with temperature......
低硅无铝中碳TRIP钢中残留奥氏体的机械稳定性何忠平,何燕霖,高毅,李麟,符仁钰,黄澍上海大学材料科学与工程学院摘 要:在GLEEBLE3500热模拟试验机上对两种TRIP(TRansformation Induced Plasticity)钢分别进行不同贝氏体温度的热处理,通过拉伸试验和X射线衍射研究钢板的性能及残留奥氏体转变.结果表明:高的原始残留奥氏体量和残奥中碳含量,可使得钢获得良好的综合性能.另外,建立起残留奥氏体随真应变的转变模型,该模型能较好的预测实验结果.关键词:TRIP钢;残留奥氏体;机械稳定性;......
characterized.It was confirmed that the incorporation of Ti into TiC resulted in an inter-bonded Ti-TiC-Ti layered structure in the struts,which enhanced the plasticity of the composite foam materials......