1.1 本试验方法规定了根据规范生产的镍钛形状记忆合金的转变温度和焓的定量测定程序 F2063 ，通过差示扫描量热法。 1.2 此测试方法可用于处于老化、退火形状设置或回火条件下的热处理样品。请参阅术语 2005年 用于这些热处理条件的定义。 1.3 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任制定适当的安全、健康和环境实践，并在使用前确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 差示扫描量热法为测定镍钛形状记忆合金的转变温度和转变焓提供了一种快速的方法。 5.2 该试验方法使用小的、无应力的退火样品来确定标称含量为54.5至57.0的镍钛合金样品 % 镍在特定温度下按重量计为奥氏体或马氏体。由于这些合金的化学分析不具有足够的精度来通过测量合金的镍钛比来确定转变温度，因此建议直接测量已知热历史的退火样品的转变温度。 5.3 这种测试方法有助于质量控制、规范验收和研究。 5.4 由于应变和载荷对转变的影响，由差示扫描量热法（DSC）得出的转变温度可能与通过其他测试方法获得的转变温度不一致。 例如，根据试验方法测量的转变温度 F2082 将与本标准测量的值不同。 5.5 对于在老化、定型或回火条件下的成品或半成品部件，应在买方和供应商之间商定使用该试验方法。请参阅术语 2005年 用于这些热处理条件的定义。

1.1 This test method defines procedures for quantitatively determining the transformation temperatures and enthalpies of nickel-titanium shape memory alloys, produced in accordance with Specification F2063 , by differential scanning calorimetry. 1.2 This test method may be used for heat-treated samples in the aged, annealed shape-set, or tempered condition. See Terminology F2005 for definitions of these heat treat conditions. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and to determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Differential scanning calorimetry provides a rapid method for determining the transformation temperature(s) and the enthalpies of transformation of nickel-titanium shape memory alloys. 5.2 This test method uses small, stress-free, annealed samples to determine whether a sample of nickel-titanium alloy containing nominally 54.5 to 57.0 % nickel by weight is austenitic or martensitic at a particular temperature. Since chemical analysis of these alloys does not have sufficient precision to determine the transformation temperature by measuring the nickel-to-titanium ratio of the alloy, direct measurement of the transformation temperature of an annealed sample of known thermal history is recommended. 5.3 This test method is useful for quality control, specification acceptance, and research. 5.4 Transformation temperatures derived from differential scanning calorimetry (DSC) may not agree with those obtained by other test methods due to the effects of strain and load on the transformation. For example, transformation temperatures measured in accordance with Test Method F2082 will differ from those measured by this standard. 5.5 The use of this test method for finished or semi-finished components in the aged, shape-set, or tempered conditions shall be agreed upon between the purchaser and the supplier. See Terminology F2005 for the definitions of these heat treat conditions.