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高温显微硬度
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  “高温显微硬度”译为未确定词的双语例句
     Based on the relationship between abrasive wear rate and relative hardness of abradant to weared material, and the microhardness testing of artificial Ce2S3 and Ce2O2S in temperature range from room temperature to 800℃, the abrasive wear of cutting tools caused by Ce2S3 and Ce2O2S inclusions in free-machining steel containing RE elements is discussed in present work.
     本文通过人工合成的Ce_2S_3和Ce_2O_2S夹杂物在室温到800℃范围内的高温显微硬度测试,并根据磨料与被磨损材料之间的相对硬度和磨料磨损程度的关系,详细讨论了稀土易切削钢中的Ce_2S_3和Ce_2O_2S夹杂对常用切削刀具磨料磨损的影响。
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     This paper investigated microstructure and hardness of Ni base+WC,Co base self-melt a-lloy,Co base+WC at different temperature. The results show that microstructure and hardness of different cladding material is different.
     研究了Ni基自熔合金+WC、Co基自熔合金、Co基自熔合金+WC为熔覆材料的激光熔覆层在不同温度下的显微组织和硬度,结果表明3种熔覆材料在相同激光熔覆工艺条件下获得的熔覆层的高温显微组织、高温显微硬度有很大的差异。
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  相似匹配句对
     hyperthermia
     高温技术
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     A Provisional Primary Standard of Microhardness Tester
     显微硬度临时基准
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     The microhardness of the coating was measured.
     测试了涂层的显微硬度
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     HIGH TEMPERATURE SUPERCONDUCTIVITY (AN OVERVIEW)
     高温超导性综述
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     INFLUENCE OF HIGH TEMPERATURE HEAT TREATMENT ON MICROSTRUCTURE AND MICROHARDNESS OF (DS)NiAl-Cr(Mo)-Hf EUTECTIC ALLOY
     高温热处理对(DS)NiAl-Cr(Mo)-Hf共晶合金显微组织和显微硬度的影响
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  high-temperature microhardness
Effect of the composition of the solid solution on the high-temperature microhardness of SiGe heteroepitaxial layers grown on Ge
      
Some questions on the choice of materials for indentors for high-temperature microhardness testing
      


Addition of Hf to a superalloy is one of the effective approaches to improve its mid-temperature properties. Based on R-alloy the apparent variations of the microstructure and phase composition in the alloy after addition of Hf were studied. As a result, in Hf-bearing alloy nearly 90% of Hf were dissolved into γ' phase, the rest were dissolved into the carbides and formed a small amount of Ni5Hf phase, and a trace of Hf went into the alloy matrix. As a result of dissolution of large quantity of Hf into γ' phase,...

Addition of Hf to a superalloy is one of the effective approaches to improve its mid-temperature properties. Based on R-alloy the apparent variations of the microstructure and phase composition in the alloy after addition of Hf were studied. As a result, in Hf-bearing alloy nearly 90% of Hf were dissolved into γ' phase, the rest were dissolved into the carbides and formed a small amount of Ni5Hf phase, and a trace of Hf went into the alloy matrix. As a result of dissolution of large quantity of Hf into γ' phase, the amount of γ' phase (including γ'+γ eu-tectic phase) increased from 62 wt%(R-alloy) to 64 wt%(1.5%Hf RH-alloy, the solution temperature of γ' phase increased by about 40℃, and the high temperature mi-crohardness of RH-alloy was obviously higher than R-alloy. As Hf was concentrated in the interdendrite region, the amount of the (γ'+γ) eutectic increased from 8 vol% (R-alloy) to 18 vol% (RH-alloy), therefore, the increase of eutectic (γ'+γ) contributed virtually to the increase of v'.Addition of Hf caused the morphology of the MC and M3B2 to convert from the forms of "script" or skeleton to those of plate or block and the solidusliquidus of the alloy to lower and the mushy region to broaden by approximately 10℃.

添加铪是改善合金中温性能的有效途径之一。本文在R合金基础上研究了加铪后合金中显微组织和相组成发生的明显变化。合金中约有90%的铪溶入γ′相中,其余溶入碳化物及形成少量的Ni_5Hf相,而在基体中溶入甚微。铪大量进入γ′中,使γ′〔(包括共晶(γ+γ′)〕数量增加,从未加铪的R合金的62wt%,增至加铪的R_H合金的64wt%,提高了γ′固溶温度约40℃,高温显微硬度明显的高于不加铪的R合金。由于铪富集于枝晶间,使共晶(γ+γ′)数量从R合金的8vol%增至R_H的18vol%,所以γ′数量的增加实际上是共晶(γ+γ′)数量的增加。铪的加入使MC和M_3B_2,形态从“草书体”或骨架状向块状或条状转变;降低了固液相线,扩大了两相区约10℃。

Based on the relationship between abrasive wear rate and relative hardness of abradant to weared material, and the microhardness testing of artificial Ce2S3 and Ce2O2S in temperature range from room temperature to 800℃, the abrasive wear of cutting tools caused by Ce2S3 and Ce2O2S inclusions in free-machining steel containing RE elements is discussed in present work. It is shown that the abrasive wear of cutting tools caused by Ce2S3 and Ce2O2S is not obvious, so free-machining steel containing RE elements is...

Based on the relationship between abrasive wear rate and relative hardness of abradant to weared material, and the microhardness testing of artificial Ce2S3 and Ce2O2S in temperature range from room temperature to 800℃, the abrasive wear of cutting tools caused by Ce2S3 and Ce2O2S inclusions in free-machining steel containing RE elements is discussed in present work. It is shown that the abrasive wear of cutting tools caused by Ce2S3 and Ce2O2S is not obvious, so free-machining steel containing RE elements is better than which containing Ca element in improving abrasive wear of cutting tools,

本文通过人工合成的Ce_2S_3和Ce_2O_2S夹杂物在室温到800℃范围内的高温显微硬度测试,并根据磨料与被磨损材料之间的相对硬度和磨料磨损程度的关系,详细讨论了稀土易切削钢中的Ce_2S_3和Ce_2O_2S夹杂对常用切削刀具磨料磨损的影响。结果表明,Ce_2S_3和Ce_2O_2S对切削刀具无明显的磨料磨损,故就此而言,优于钙易切削钢。

Properties and microstructure of a new nickel base superalloy after long time exposure at different temperatures have been investigated. The results indicate that the major precipitates of the new alloy after aging at 593 ℃ and 704 ℃ for 1000 h are γ' phase and MC carbides. M23C6 carbide also precipitates at 704 ℃ and at higher temperature. Small amount of ηphases precipitate at grain boundaries after 750 ℃ aging for 1000 h and a large amount of intragraunlar η phases has a Widmanstatten pattern after 849℃ aging...

Properties and microstructure of a new nickel base superalloy after long time exposure at different temperatures have been investigated. The results indicate that the major precipitates of the new alloy after aging at 593 ℃ and 704 ℃ for 1000 h are γ' phase and MC carbides. M23C6 carbide also precipitates at 704 ℃ and at higher temperature. Small amount of ηphases precipitate at grain boundaries after 750 ℃ aging for 1000 h and a large amount of intragraunlar η phases has a Widmanstatten pattern after 849℃ aging for 1000 h. γ' phases grow rapidly with increasing aging temperature and have redissolved partly after 849℃ aging for 1000 h. Harmful brittle phase, such as a phase, has not been detected in all samples. The impact toughness of alloy declines and there is ductile/brittle transition with increasing aging temperature. Room temperature microhardness of alloy decreases with an increase in temperature. This is mainly attributed to the growth of γ' phase. High temperature microhardness of alloy for standard heat-treated conditions is higher than room temperature microhardness.

研究了一种新型镍基高温合金在不同温度下长期时效后的组织及冲击韧性、硬度等性能。结果表明,合金在593℃和704℃时效1000h后,主要析出相是γ′和MC,在704℃以上又析出了M_(23)C_6,合金在750℃时效1000h后晶界处开始析出η相,而在849℃时效1000h后晶内出现了大量的片状η相,呈魏氏体分布,γ′相随时效温度的增加生长迅速,且在849℃时效1000h后出现回溶,没有发现σ等脆性相的出现,随着时效温度的提高,合金的冲击韧性下降,由韧性断裂变为脆性断裂,室温显微硬度随时效温度的提高而降低,主要由γ′的长大所致;合金在标准热处理条件下的高温显微硬度高于室温显微硬度。

 
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