- Issue 2,1995 Table of Contents
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1995(2).
Abstract:探討了ＷＣ－Ｃｏ硬質(zhì)合金飽和磁化強度的影響因素、磁化機制和比飽和磁化強度４πσ與抗彎強度σ（ＴＲＳ）的關(guān)系。結(jié)果表明，影響ＷＣ－Ｃｏ合金４πσ的主要因素是γ相含量和γ相成分，其次是γ相結(jié)構(gòu)。其４πσ同合金標稱鈷含量或合金碳含量間均不存在單一性對應(yīng)關(guān)系。γ相分布和熱處理及添加稀土元素對合金４πσ的影響，實質(zhì)上仍歸結(jié)為上述基本因素的作用。ＷＣ－Ｃｏ合金的４πσ同抗彎強度間并不存在明確的對應(yīng)關(guān)系，因而難以用飽和磁化強度（Ｍｓ或４πσ）取代σ（ＴＲＳ）的測定。
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Xiao Lin , Gu Haicheng , Kuang Zhenbang
1995(2).
Abstract:采用二次電子線掃描法研究了鋯－４合金ＲＴ、４００℃和６００℃下疲勞斷口分形特征，指出鋯－４合金疲勞斷口是一種與晶粒尺寸相當?shù)牟牧辖M織層次上的分形結(jié)構(gòu)；隨著斷口分形維數(shù)的增大，相應(yīng)的疲勞壽命單調(diào)遞增。認為相同循環(huán)塑性應(yīng)變幅下，隨著試驗溫度升高，疲勞過程中蠕變作用加強，斷口表面蠕變空洞和二次裂紋數(shù)量明顯增加，斷口表面粗糙度增加是疲勞斷口分形維數(shù)增大的原因。
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1995(2):1-7.
Abstract:簡要介紹了鈦鋁系金屬間化合物的發(fā)展背景，著重闡述了目前α２－Ｔｉ３Ａｌ基、γ－ＴｉＡｌ基及δ－ＴｉＡｌ３基合金的發(fā)展狀況、總結(jié)了近年來為了獲得鈦鋁系金屬間化合物的良好綜合機械性能尤其是室溫塑性，國內(nèi)外研究者所采用的一系列方法。
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Wang Hualin , Li Hailin , Wu Dongdi
1995(2):8-17.
Abstract:he developments, which include the ignition temperature, ignication time, dynamic of burring reaction, technology, principle of interaction of titanium with carbon and experimental method etc, are described. The development trend of Self-Propagating High- Temperature Synthesis of titanium carbide is pointed out
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1995(2):18-21.
Abstract:he process of nanometeral WC-Co powder.excellent performance and sintering behaviour of nanometral carbide are briefly presented.
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Zhao Yongqing , Zhu Kangying , Li Zuochen , Wu Qingzhi
1995(2):27-33.
Abstract:初步研究了拉應(yīng)力和合金成分對Ｔｉ８１１合金棒材熱鹽應(yīng)力腐蝕（ＨＳＳＣ）性能的影響。結(jié)果表明：Ａｌ含量小于８．０ｗｔ％時，Ａｌ、Ｍｏ、Ｖ含量的變化對合金ＨＳＳＣ性能無明顯影響；Ａｌ含量大于８．０ｗｔ％，隨Ａｌ含量升高，ＨＳＳＣ性能明顯下降，而Ｍｏ、Ｖ含量可改善其性能；當拉應(yīng)力由１４７ＭＰａ升高到１９６ＭＰａ，ＨＳＳＣ性能明顯降低。在實驗基礎(chǔ)上，提出了ＨＳＳＣ斷裂模型，鹽蝕區(qū)有Ｃｌ－，Ｎａ＋等存在，產(chǎn)生微裂紋，裂紋沿原β晶界擴展，最終導(dǎo)致斷裂。
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Cul Wenfang , Sun Qiuxia , Cui Jianzhong
1995(2):40-44.
Abstract:The corrosion resistances of 01420 Al-Li alloy under aged and pesk aged conditions have been studied systematically. The results show that the corrosion resistances of under aged alloy are better than those of peak aged alloy for intergranular corrosion, exfoliationcorrosion, salt spray corrosion and stress corrosion testing. The changes of corrosion resistance of alloy owe to the variations of quantity and distribution of S phase. The corrosion resistance of alloy will gradually lower with the increasment of S phase and its distribution in grain boundary.
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Ge Rongde , Liu Zhihong , Chen Huiguang , Zhang Duomo , Zhao Tiancong
1995(2):45-49.
Abstract:he effect of ball-milling on the properties of ultrafine ZrO2 (Y2O3) powders prepared by coprecipitation under different conditions is investigated. It is shown by the expertimental results that the agglomerate size of as-calcinated powders can be effectively decreased by ball-milling but the primary particle size is hardly affected. The surface area of seriously agglomerated powders can be markedly increased by ball-milling but that of softly agglomerated powders is not evidently increased. The crystal size of as-calcinated powders becomes much finer after ball-milling because transformation of the powder from tetragonal structure to monoclinic structure occurs during ball-milling. It is also shown that ball-milling can be used to improve the sinterability of seriously agglomerated powders.
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1995(2):50-54.
Abstract:he consumption of lithium and variation of hydrogen contents in the process of melting and casting Al-2. 8% Li alloys tube have been studied. Experimental and calculation results indicate that reasonable option for melting and casting process can decrease the consumption of isotope lithium-6 below 2%. The increase of hydrogen contents in Al-Li alloys is mainly caused by absorption of moisture.
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1995(2):55-59.
Abstract:he explosive clad of Ta-10W liner tube and CrNiMo steel tubular sections has been studied. The interfaces of explosive clad have been examinated also. The relationship between explosive charg and deformation of tabular section is discussed. The effect of explosive clad on mechanical properties of tabular sections is analysed. The optimun process parameters of explosive clad are determined. The results show that the corrected optimum process parameters of explosive clad for plate can be used for explosive clad of inner liner tube. The thickness of explosive charge for explosive clad of tube with circular cross-section is about 60% of that for explosive clad of plate under the same conditions. Ta-10W liner tube of 0.4mm wall can be claded with inner wall of CrNiMo tube under the condition of explosive charge mass ratio R of 0.8. The interfaces of explosive clad are wavelike.
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1995(2):60-65.
Abstract:he principle and optional conditions of inert gas fusion (impulse heating) method for determination of hydrogen with Sn-flux are described. The results show that the method for determinating hydrogen in Ti. Zr. Hf. Ta. Nb and their alloys is accurate. The POwer for analysing are 2500W for Ti. Zr and Hf and 2700-2800W for Ta and Nb. The heating-times are 30s for Ti. Zr and Hf and 40s for Ta and Nb, respectively.
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Weng Wenda , Chen Zhiguo , Zhong Wenda , Wang Chengzhong
1995(2):66-70.
Abstract:he tests of single-direction tension and expanding with hydrostatic pressure (double-direction tension) have been carried out for 9 kinds of plate. The relationships ofperformance indexes for single-direction and double-direction tension are studied,respectively. A series of significant results are obtained.
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Qin Shuyi , Zhang Xiyan , Liu Shikai
1995(2):71-75.
Abstract:new method of measuring the mean length of fibers in composites using SEM is presented in this paper. The fibers in preforms of Short Fiber Reinforced Metal-Matrirx-Composties(SFR MMCs) have been measured. The results show that the length of fibers is a Gauss distribution.
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1995(2):76-80.
Abstract:his paper introduces the automatic controll principle and structure of hardware and software for the titanium and titanium alloys dispense system controlled by the computer
