【摘 要】
:
A work roll grade high speed steel material was isothermally oxidised in both dry and 12.5% H2O humid air.Nano-indentation tests were performed to investiga
【机 构】
:
School of Mechanical,Materials and Mechatronic Engineering,University of Wollongong,Wollongong NSW 2
论文部分内容阅读
A work roll grade high speed steel material was isothermally oxidised in both dry and 12.5% H2O humid air.Nano-indentation tests were performed to investigate the mechanical properties,such as hardness and elastic modulus of the HSS sample,and oxide scales.The large difference in hardness between the carbides and the HSS matrix indicated that adding carbides significantly enhance the wear resistance of the HSS sample.It has been found that the difference in Young s modulus and hardness between the inner and outer oxide layers is due to the different oxide phase composition and microstructures of these two sub-layers.A finite element simulation was developed to study the nano indentation of the oxide layer formed on the surface of a high speed steel roll material.
其他文献
某氮肥厂工人因设备故障被含砷量(含三氧化二砷35%)很高的热碱液灼伤面部及颈、胸部。在现场和入院后创面未经彻底冲洗和中和即送外科,按烫伤常规治疗。治疗44天后创面愈合,
一、病例报告患者28岁,于1987年12月产后6个月(哺乳期)在当地医院放置T型宫内节育器(IUD),术中、术后无腹痛等任何异常反应。但在术后6个月,29个月患者却两次受孕,均行人工
To solve the structural defect,bad wear resistance and difficult replacement and maintenance etc,structure and material on entry side guide of finishing mil
近几年来,各地早熟促成栽培的西瓜面积越来越大,由于早熟西瓜多集中于5-6月月份上币,从而造成7、8月份西瓜上市量少,不能满足市场需求。为解决这一矛盾,我们经过两年的实践,摸索出了
20多年的坎坷艺术生涯,使他历尽千辛万苦,饱尝酸甜苦辣,也让他享受到了这些艰辛付出之后的成功喜悦。一个个艰辛的脚印,集合了他对摄影艺术的痴迷与追求,勾绘成了一幅幅动感
“礼服还有王冠,我都留着,将来女儿出嫁的时候送给她作嫁妆。”已有4个月身孕的许昱华远征俄罗斯叶卡捷琳堡,最终赢得第11届国际象棋女子世界锦标赛冠军,并获“男子特级大师
工具避孕是重要的节育措施,其中尤以宫内节育器(IUD)和避孕套应用广泛。长期来IUD都是我国首要节育工具和节育法早在30年代Grafenberg环(德国医生利用蚕肠线外绕银丝制成)即
马是沙宝亮的最爱,他有一匹属于自己的马,名叫“公主”,工作之余,他会花很多时间和他的马在一起,和马一起散步,一起运动。旅行是沙宝亮的一大爱好,他去过很多地方,最喜爱的还
柳渊在新生代的明星中不算很扎眼,在美女如云的演艺圈里,她算不得如何出众。几年来,她扎扎实实地在《走向共和》、《八路军》、《敌后武工队》等十余部大制作的电视连续剧中
中国石化总公司氰化物、硫化氢急性中毒抢救培训班于5月12日至16日在洛阳石化工程公司举办,来自34个石化企业的56名学员参加了学习。
Sinopec Corp. Cyanide and Hydrogen