采用 DSC、弯曲实验和扫描电镜分析研究了热处理工艺对医用 TiNi 合金细丝显微组织、相变温度和形状记忆效应的影响。结果表明,400℃~500℃,30 min^120 min 热处理时,随着温度的升高和时间的增长,TiNi 合金细丝中 Ti3Ni4析出相增多,相...采用 DSC、弯曲实验和扫描电镜分析研究了热处理工艺对医用 TiNi 合金细丝显微组织、相变温度和形状记忆效应的影响。结果表明,400℃~500℃,30 min^120 min 热处理时,随着温度的升高和时间的增长,TiNi 合金细丝中 Ti3Ni4析出相增多,相变温度也升高。细丝经 500℃,30 min 处理后的最大可回复应变量值最大。随弯曲变形量的增加,疲劳寿命缩短。500℃处理的试样疲劳寿命最长。展开更多
Because of the values are always estimated at the national totals of research institutes on R&D,therefore the many construction data on R&D can’t get.For making the R&D data more goodly make use of in the...Because of the values are always estimated at the national totals of research institutes on R&D,therefore the many construction data on R&D can’t get.For making the R&D data more goodly make use of in the decision and management process, and is beneficial to the analysis of the S&T and S&T policy and the researcher’s work, must direct from the unit surveyed attain to the R&D data. Pass to research on the classification of research institutes that the method is found out at R&D indication’s calculation of the unit surveyed and can help the respondents to fill in the tables of R&D。This method can’t only alleviate the incidence of respondents,and can guarantee to the R&D data filling the tables is available.展开更多
文摘采用 DSC、弯曲实验和扫描电镜分析研究了热处理工艺对医用 TiNi 合金细丝显微组织、相变温度和形状记忆效应的影响。结果表明,400℃~500℃,30 min^120 min 热处理时,随着温度的升高和时间的增长,TiNi 合金细丝中 Ti3Ni4析出相增多,相变温度也升高。细丝经 500℃,30 min 处理后的最大可回复应变量值最大。随弯曲变形量的增加,疲劳寿命缩短。500℃处理的试样疲劳寿命最长。
文摘Because of the values are always estimated at the national totals of research institutes on R&D,therefore the many construction data on R&D can’t get.For making the R&D data more goodly make use of in the decision and management process, and is beneficial to the analysis of the S&T and S&T policy and the researcher’s work, must direct from the unit surveyed attain to the R&D data. Pass to research on the classification of research institutes that the method is found out at R&D indication’s calculation of the unit surveyed and can help the respondents to fill in the tables of R&D。This method can’t only alleviate the incidence of respondents,and can guarantee to the R&D data filling the tables is available.
