稀有金属材料与工程
稀有金屬材料與工程
희유금속재료여공정
RARE METAL MATERIALS AND ENGINEERNG
2010年
2期
309-313
,共5页
王敬忠%颜学柏%王韦琪%闫静亚%容耀%严平
王敬忠%顏學柏%王韋琪%閆靜亞%容耀%嚴平
왕경충%안학백%왕위기%염정아%용요%엄평
爆炸-轧制复合%剪切强度%轧制温度%退火温度
爆炸-軋製複閤%剪切彊度%軋製溫度%退火溫度
폭작-알제복합%전절강도%알제온도%퇴화온도
explosion and rolling cladding%shear strength%rolling temperature%annealing temperature
为扩大钛-钢复合板的尺寸,采用一种新颖的组料方式,这种方法包括两个主要步骤,首先用爆炸焊接的方式将DT4夹层与钛板结合,然后按照对称方式组坯.研究轧制温度、退火温度对复合板剪切强度的影响.利用扫描电镜、光学显微镜和显微硬度试验机对复合板的微观组织和界面附近硬度进行分析.结果表明:复合板的结合强度取决于轧制温度和轧后退火温度,当轧制温度超过钛的α→β相变温度,并且退火温度超过750 ℃时,Ti/DT4界面脆性化合物明显增多,剪切强度显著降低;当退火温度超过900 ℃,Fe在钛中扩散速度快,显微硬度的峰值在钛侧出现;在550~650 ℃退火,复合板的结合强度略有升高.
為擴大鈦-鋼複閤闆的呎吋,採用一種新穎的組料方式,這種方法包括兩箇主要步驟,首先用爆炸銲接的方式將DT4夾層與鈦闆結閤,然後按照對稱方式組坯.研究軋製溫度、退火溫度對複閤闆剪切彊度的影響.利用掃描電鏡、光學顯微鏡和顯微硬度試驗機對複閤闆的微觀組織和界麵附近硬度進行分析.結果錶明:複閤闆的結閤彊度取決于軋製溫度和軋後退火溫度,噹軋製溫度超過鈦的α→β相變溫度,併且退火溫度超過750 ℃時,Ti/DT4界麵脆性化閤物明顯增多,剪切彊度顯著降低;噹退火溫度超過900 ℃,Fe在鈦中擴散速度快,顯微硬度的峰值在鈦側齣現;在550~650 ℃退火,複閤闆的結閤彊度略有升高.
위확대태-강복합판적척촌,채용일충신영적조료방식,저충방법포괄량개주요보취,수선용폭작한접적방식장DT4협층여태판결합,연후안조대칭방식조배.연구알제온도、퇴화온도대복합판전절강도적영향.이용소묘전경、광학현미경화현미경도시험궤대복합판적미관조직화계면부근경도진행분석.결과표명:복합판적결합강도취결우알제온도화알후퇴화온도,당알제온도초과태적α→β상변온도,병차퇴화온도초과750 ℃시,Ti/DT4계면취성화합물명현증다,전절강도현저강저;당퇴화온도초과900 ℃,Fe재태중확산속도쾌,현미경도적봉치재태측출현;재550~650 ℃퇴화,복합판적결합강도략유승고.
In order to enlarge the dimensions of titanium cladding steel plate, a new method of two main procedures was used, in which the DT4 thin slice was exploded firstly with titanium plate to assemble billet according to a symmetrical way. The effects of rolling and annealing temperatures on the shear strength of titanium cladding steel plate were investigated. The microstructures and interfacial diffusion of the cladding plates were observed or measured by optical microscope, scanning electric microscope and micro-hardness tester. The results show that the shear strength of the cladding plates is remarkably depended on the rolling and annealing temperatures, and the brittle compound amount in the interface of titanium/DT4 will increase evidently and the shear strength of titanium cladding steel plate will decrease sharply when the rolling temperature is above 882 ℃ (the α→β phase transformation temperature of titanium), or the annealing temperature is above 750 ℃. The micro-hardness peak value appears in titanium side when the annealing temperature is higher than 900 ℃ due to Fe element diffusion in titanium. Annealed within the range from 550 to 650 ℃, the shear strength will slightly increase.