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Torsion Failure Analysis of 0Cr17Ni7Al Precipitation Hardening Stainless Steel Wire Lei Chen1, a, Renbo Song1, b*, Fuqiang Yang1, c, Yongjin Wang1, Zhidong Tan1, Ke Guo2,3 and Zhonghong Wang2 1School of Materials Science and Engineering, University of Science and Technology, Beijing, 100083, China 2Angang Group Mining Engineering Corporation, Anshan, 114021, China 3University of Science and Technology Liaoning, Anshan, 114051, China aUSTB_cl@163.com, bsongrb@mater.ustb.edu.cn,cyangfuqiang208@sina.com Keywords: 0Cr17Ni7Al stainless steel wire, Torsion failure, AlN inclusion, Micro-crack.
Introduction Since the invention of stainless steel at the beginning of the 20th century, the stainless steel has combined the image of contemporary materials and the excellence remains of construction uses [1].
It has good corrosion resistance for various environments and is also one of the highest strength construction materials. 0Cr17Ni7Al belongs to semi-austenitic precipitation hardening stainless steels and is modified on the base of 18-8Cr-Ni stainless steel.
Micro-crack Fig. 2 Surface morphology of failure steel wire The analysis of raw materials: Fig. 3 is the longitudinal metallographic structures of raw material of Φ4.4mm steel wire invalidated with torsion and deformed without torsion.
Transactions of Aviation & Materials, 2003,23(zl)280 [4] Zhao Ming, Nie Mingfen, Cai Lei, Torsion property analysis of the steel wire.

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Introduction The hardfacing coatings, which are commonly used to provide a wear, corrosion and/or erosion resistant surface for structural materials, have been investigated extensively.
The bending strength at 500 o C was much lower than that at RT, which was resulted from the decrease in tensile strength of materials with the increase in temperature.
Acknowledgements The financial support and the provision of materials from Mitsubishi Heavy Industries, Ltd. are greatly acknowledged.
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Materials and Method 2.1 Proposed Patch Antenna Design Figure 1 depicts the geometric layout and dimensions of the rectangular patch antenna design.
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Parameter Optimization and Analysis of Pellet Mill Qinghai Jiang1, a, Yu Sun1,b, Kai Wu1,c, and Xianfei Xia1,d 1School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China ajiangqinghai101@126.com, bsunyu@mail.njust.edu.cn, cwukai@mail.njust.edu.cn, dxfei116@139.com Keywords: Pelleting.
Analysis of the Condition to Seize the Material The force state of material is shown in Fig.1 when it comes to the wedge.
Figure.3 The relative height curve of material(θ=40°) Figure.4 The relative height curve of material(θ=50°) Figure 5 The relative height curve of material(θ=60°) Figure 6 The relative height curve of material(θ=70°) Analysis of the Material Extrusion Speed Material extrusion process can be divided into loose stage, transition stage and pressing stage [5].
Acknowledgement The researches are supported by the project of “Six Talents Peak of Jiangsu province (2010-JXQC-080)”, “The natural science foundation of Jiangsu Province (BK2011706)”, and “The prospective industry-study-research cooperation fund of Jiangsu province(BY2012023)”.
Huff: Effects of Particle Size and Processing Variables on the Properties of an Extruded Catfish Feed, Journal of aquatic food product technology Vol.10(2001), p.21-33 [3] Shi Shuijuan, Wu Kai, Jiang Aijun: Mechanical model establishment and finite element analysis of ring die in pelletizing, Machinery Design & Manufacture (2011), p.38-40 [4] Wu Kai, Shi Shuijuan, Peng Binbin, Ding Wuxue, Sun Yu: Modeling and analysis on extruding force in pelleting process, TRANSACTIONS OF THE CHINESE SOCIETY OF AGRICUTURAL ENGINEERING Vol.26(2010), p.142-147 [5] Bai Wei, Hu Jianjun, Lei Tingzhou, Shi Xinguang, Yang Zhannong: Experimental Study on Straw Cold Molding by Pressure and Its Regression Analysis, HENAN SCIENCE Vol.27(2009), p.703-706

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Experimental Materials The wet NR granules were supplied by the Guangdong Natural Rubber Industrial Group Co., Limited, China; the other materials were all commercial products with a chemical purity.
Acknowledgements This work was financially supported by the Hainan Natural Science Foundation (No.510213); the Earmarked Fund for China Agriculture Research System (No.CARS-34-GW9) and the Fundamental Research Funds for Rubber Research Institute, CATAS(No.1630022011031).
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