焊接气孔是粉末冶金材料激光焊接的主要缺陷。
粉末冶金材料屈服条件是广义塑性理论的重要基础。
The yield criterion for powder metallurgical materials was a key basis of generalized plasticity theory.
粉末冶金材料是塑性可压缩材料，其塑性理论方法有待于深入研究。
Powder metallurgical material is compressible in plastic deformation. Its plasticity method needs to be further researched.
系统地介绍了激光焊接技术在粉末冶金材料中的应用及其国内外动态。
The application of laser welding technology in P/M materials and its developing status are systematically introduced.
JH70后减震器导向座采用粉末冶金材料等，使密封效果得到提高。
The guide seat of K90, JH70 rear shock absorber are made of powder metal, so that the sealing effect has been improved.
粉末注射成形材料在机械性能、密度及表面粗糙度都比一般粉末冶金材料为好。
The powder injection molding material is superior to conventional powder metallurgy method such as excellent mechanical strength, higher density and better surface finish.
详细介绍了上述各种材料的特性和应用领域，重点介绍了粉末冶金材料在汽车上的应用。
The properties and application area of all above materials are introduced in detail, emphatically on the application of metallurgical powder material in automobiles.
通过气喷气冷法制取合金粉末，用压制后真空烧结的方法制备高铝锌基合金粉末冶金材料。
The alloy powder was produced by gas atomization. P/M material samples were made by pressing and sequent vacuum sintering.
基于此建立了粉末冶金材料平面应变广义上限法，并以平面应变挤压为例说明了该方法的应用。
Furthermore, a generalized upper bound method for powder metallurgical material in plane strain was developed and its application was illustrated by analyzing the plane strain extrusion.
分析表明：所给出的方法可以很好的表征国内工艺条件下粉末冶金材料缺陷的概率特征对强度寿命的影响，方法是有效的。
It is concluded that the method can describe the effect of probabilistic character of defects on the strength and life of PM alloy, and it is proved to be valid.
粉末冶金材料屈服条件是粉末冶金材料广义塑性理论的基础，其数学表达式对粉末冶金材料广义塑性理论方法的建立有重要影响。
Based on the yield criterion and plastic potential theories, a plastic constitutional relation, yield condition and yield curve equation in plane strain for powder metallurgical material were derived.
结合粉末冶金材料含有非金属夹杂裂纹的特点，以裂纹扩展寿命可靠性分析的剩余强度模型与寿命干涉模型为基础，建立了多夹杂裂纹扩展的可靠性敏度分析模型。
Based on residual strength interference model and life interference model, a sensitivity analysis method on reliability was proposed for the fatigue crack growth life of powder metallurgy materials.
1976年至1980年东北工学院金属材料系粉末冶金专业学习；
1976-1980 Majored in Powder Metallurgy at the Metallic Materials Department of Northeast Technology University;
采用粉末冶金法制备泡沫铝材料，对发泡过程中泡沫体膨胀的演变过程及动力学机制进行了研究。
Development course and kinetics mechanism of foam body expansion were investigated during preparing foam aluminum by powder metallurgy method.
本论文围绕这一重要课题，采用粉末冶金法制备了HA/316L生物复合材料；
Surrounding this important task, HA/316L biocomposites were fabricated with powder metallurgy in this paper.
前言：通过赴企业调研，收集信息和资料，为进一步完善金属材料专业粉末冶金高职教育教研教改进行了探讨与实践。
Based on the investigation in the enterprises, this paper discusses and fulfils the teaching reform and research on one of the courses of metal and material specialty: Powder metallurgy.
通过烧结铁圆柱试样单向压缩试验，验证了粉末冶金烧结材料广义塑性屈服条件的合理性和适用性。
Based on the single axial compression of sintered iron cylinder specimens, the rationality and applicability of generalized yield criterion are validated for sintered powder metallurgy materials.
介绍了国内外气门座材料的使用与研制以及国外粉末冶金气门座的开发与应用情况。
Valve seat materials application and development in China and abroad are introduced, especially the research and application of the powder metallurgy valve seat abroad.
对于非互溶性组元为主组元的材料研究，以钨基高比重粉末冶金合金为此类材料的典型代表。
For materials with immiscible elements which are main elements, powder metallurgy material of W-based heavy alloy is on a typical example.
多用于美术粉饼、樟脑芳香球、粉末冶金、磁性材料、陶瓷等行业。
It used for powder art, camphor aroma balls, powder metallurgy, magnetic materials, ceramics and other industries.
采用粉末冶金技术制备了一种低膨胀高导热支撑材料(简称DG合金)，研究了烧结工艺对合金组织和性能的影响。
A support material with low expansivity and high conductivity, called DG alloy, was prepared by powder metallurgy. The effects of sintering process on its properties and microstructure were studied.
研究了大范围铜含量对粉末冶金航空刹车材料物理力学性能的影响。
The effects of copper content on the physical and mechanical properties of powder metallurgy airplane brake materials were studied.
高性能低成本的铁基粉末冶金齿轮材料的研究。
Secondly, this paper is study of high performance and low cost iron-based powder metallurgical gear material.
对采用粉末冶金法制备泡沫铝材料进行研究。
The process of preparation foam aluminum by powder metallurgy method was studied.
用途：钛粉原料，发泡材料，粉末冶金，硬质合金添加剂，烟花。
Uses: titanium powder materials, foam materials, powder metallurgy, hard alloy additives, fireworks.
本制粒工艺亦可推广到其它用细粉未（如钨、钼、钛、锆等）制取粉末冶金多孔过滤材料的生产中。
This granulation process can also be widely used for producing P/M porous materials by using other fine powders, such as w, Mo, Ti, Zr, etc.
介绍了粉末冶金热锻连杆的材料成分和制造工艺。
The material chemical composition and manufacture technical process of powder metal forged connecting rods are introduced.
对采用粉末冶金法制备泡沫铝材料过程中气泡稳定性对发泡效果的影响进行了研究，对影响气泡稳定的因素进行了分析。
The influence of foaming effect on bubble stability of foam aluminum prepared by powder metallurgy was studied, with relevant influencing factors analysed.
通过材料分析、多种配方的对比及市场调查，最终确定适应市场需求的粉末冶金闸瓦的材料配方。
By material analysis, prescription contrast and market research, we finally find the powder metallurgy material prescription of brake shoe, which adapt to the market demand better.
研究采用的铁基粉末冶金摩阻材料主体配方是FMPS型铁基粉末冶金摩阻材料基础配方。
The principle part of composition in this research was the composition of FMPS iron based powder metallurgical friction material.
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