共搜索到3209条信息，每页显示10条信息，共321页。用时：0小时0分0秒204毫秒
Trans. Nonferrous Met. Soc. China 22(2012) s232-s238 A new approach to investigate real flow stress in micro-extrusion LIN Jun-feng1, LI Feng2, ZHANG Jin-feng1 1. National Key Laboratory...-forming. Key words: micro-forming; flow stress; friction; extrusion 1 Introduction The rapid advancement of micro-forming technology in the past few years has led to the creation of several novel......
J. Cent. South Univ. Technol. (2011) 18: 731-738 DOI: 10.1007/s11771-011-0755-x Characteristics of radiation and convection heat transfer in indirect near-infrared-ray heating chamber CHOI Hoon...: Numerical study was performed to evaluate the characteristics of combined heat transfer of radiation, conduction and convection in indirect near infrared ray (NIR) heating chamber. The effects......
Continuously extending extrusion forming of semisolid A2017 alloy by SRS processGUAN Renguo, WEN Jinglin, LIU Xianghua, and LI YinglongMaterial and Metallurgy School, Northeastern University... machine. Through controlling pouring temperature, semisolid formingand extending extrusion was combined organically. A2017 product with fine surface and rectangular transection of 14mmx25 mm was obtained......
Corrosion behavior of extrusion, under-aged, peaked-aged and over-aged WE93 alloys in Na HSO3 solutions蒋全通,马鸣龙,张奎,李兴刚,李永军,石国梁,袁家伟State Key Lab for Non-ferrous Metals and Process, General Research Institute for Non-ferrous Metals摘 要:The corrosion behaviors of extrusion, under-aged, peaked-aged and over-aged WE93 alloys in Na HSO3 solutions were......
Corrosion behavior of extrusion, under-aged, peaked-aged and over-aged WE93 alloys in Na HSO3 solutions蒋全通,马鸣龙,张奎,李兴刚,李永军,石国梁,袁家伟State Key Lab for Non-ferrous Metals and Process, General Research Institute for Non-ferrous Metals摘 要:The corrosion behaviors of extrusion, under-aged, peaked-aged and over-aged WE93 alloys in Na HSO3 solutions were......
Influence of Bi addition on dynamic recrystallization and precipitation behaviors during hot extrusion of pure MgJongbin Go1,Jong Un Lee1,Hui Yu2,Sung Hyuk Park11. School of Materials Science... viability and enables the high-speed extrusion of Mg–Bi alloys. In this study, the effects of Bi addition on the dynamic recrystallization(DRX) and dynamic precipitation behaviors during hot extrusion......
-section direct extrusion(CVCDE) in the extrusion process, the accumulative strain formula is derived, and it can be known that the extrusion ratio of various stages directly determines the size of corresponding stage strain by formula. In this paper, as an example of the two interim dies, three die combinations of different angles and extrusion ratio are designed. Aviation magnesium alloy ZM6......
Effect of equal channel angular extrusion on Al-6063 bending fatigue characteristicsJ.Nemati1,2,G.H.Majzoobi2,3,S.Sulaiman1,B.T.H.T.Baharudin1,M.A.Azmah Hanim11. Department of Mechanical... extrusion(ECAE) process at a temperature of 200°C using route A, with a constant ram speed of 30 mm/min through a die angle of 90° between the die channels for as many as 6 passes. The experiments were......
Bulk Al–Al3Zr composite prepared by mechanical alloying and hot extrusion for high-temperature applicationsE.Pourkhorshid1,M.H.Enayati1,S.Sabooni1,F.Karimzadeh1,M.H.Paydar21. Department of Materials... composite was prepared by a combination of mechanical alloying(MA) and hot extrusion processes. Elemental Al and Zr powders were milled for up to 10 h and heat treated at 600℃ for 1 h to form stable......
......
